Description
which of the following formulas represents an ionic compound?
a) CS2
B) Bal2
C) N2O4
D) Kr
User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.
Explanation & Answer
a) Carbon Disulfide
b) Barium Iodide
c) Dinitrogen Tetroxide
d) Kuder-Richardson
Completion Status:
100%
Review
Review
Anonymous
Great study resource, helped me a lot.
Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4
24/7 Homework Help
Stuck on a homework question? Our verified tutors can answer all questions, from basic math to advanced rocket science!
Most Popular Content
Liberty University Use of Proton Pump Inhibitors Discussion
From the assigned website found below, there are several significant issues with long-term use of proton pump inhibitors ( ...
Liberty University Use of Proton Pump Inhibitors Discussion
From the assigned website found below, there are several significant issues with long-term use of proton pump inhibitors (PPI). Discuss the symptoms for which PPIs are prescribed and the intended target of these drugs. Next, address an organelle that would also be affected by these drugs. Based on the function of that organelle, do the issues in the website make biological sense? Lastly, propose an alternative approach for a patient with these symptoms that would not require him or her to remain on PPIs long-term. Does your approach address the source of their symptoms?the website link: https://link.springer.com/article/10.1007%2Fs00535...500-600 wordsAPA style
San Diego State University Minerals Rocks and Radiometric Dating Lab Worksheet
Geologic Time and Rock & Mineral Identification Guide Adapted from Home Science Tools (2008b)Geologic Time (Radiometric Da ...
San Diego State University Minerals Rocks and Radiometric Dating Lab Worksheet
Geologic Time and Rock & Mineral Identification Guide Adapted from Home Science Tools (2008b)Geologic Time (Radiometric Dating Techniques): Answer the questions below.What unstable isotope would be best to refine the date of bones found in a cave hearth built by humans between 30,000 and 50,000 years ago?We find samples of an igneous rock demonstrate it has been through 4 half-lives. The test element has a half-life of 150 million years. How old is the rock?Argue for or against the following: A stone tool fashioned from a chunk of obsidian yields a date of 5,000,000 years old, therefore, the tool was made by a human 5,000,000 years ago.You are trying to figure out the age of what is thought to be a very old fossil with a volcanic ash layer immediately above the fossil. We know the fossil is at least more than 250 million years old. Should we use carbon 14 to date the fossil, or uranium 238 to date the volcanic ash layer, and why?If the parent isotope starts with 100 grams, but your samples yield only 12.5 grams of the parent isotope, how many half-lives have passed?Rock & Mineral IdentificationMinerals are naturally-occurring, solid substances composed of chemical elements. This means that minerals, ranging from salt to rubies, are made up of compounds of elements that appear on the periodic table. Each type of mineral has a specific chemical composition and consistent physical properties. They are inorganic, not living or made up of living things. Minerals form a crystalline structure which gives rocks their "rough" texture.Rocks are mixtures, or aggregates, of different minerals. Some rocks, like limestone, are composed mostly of one mineral, but the majority of rocks are made up of several major minerals. Rocks are divided into three categories based on how they are formed: igneous, sedimentary, and metamorphic.Igneous rocks form when hot magma from beneath the Earth's surface cools rapidly. Igneous rocks that cool beneath the surface (perhaps by hitting underground air pockets) are called intrusive or plutonic igneous rocks. Granite is an example. When the magma cools on the Earth's surface by flowing from the mouth of a volcano as lava, the resulting rock is called extrusive or volcanic rock. Basalt and obsidian are common examples of volcanic igneous rocks.Sedimentary rocks are formed by layers of sediment accumulating and being compressed together for extended periods of time. Most sedimentary rocks have layers, and they often contain fossils, as living material was buried in the sediment before it was compressed into rock. Common examples of these rocks are limestone, sandstone, and shale.Metamorphic rocks are rocks that have been changed by high pressure or heat. The crystal structure is changed, the texture often becomes coarser, and sometimes new minerals are formed in the process. Metamorphic rocks are the most complex group of rocks. Schist, slate, and gneiss (pronounced like "nice") are common examples.Identifying RocksThis kit includes 15 common rocks with examples from each category. Observe them closely with the included magnifying lens.Color. As a general rule, darker rocks are made of minerals with iron and magnesium, such as magnetite or biotite. Lighter-colored rocks may have lots of quartz, calcite gypsum, or halite in them.Texture. Is it coarse-grained or glassy-smooth? Is it dense with very small particles? Are minerals visible to the naked eye? The texture of a rock depends on what is it made of. For example, igneous rocks go by basic crystal size, and sedimentary rocks will have a texture of clastic, chemical, or biogenic, depending on how they formed. Metamorphic rocks will be identified by whether they are foliated or not foliated.Structure. Look for layers, which are often an indication of sedimentary rocks. Some volcanic igneous rock will have a sponge-like structure – pumice is an example of this. It is less dense than water, so it floats! Sedimentary rocks may have layers in them, but this is more common to shales. They can also have fossils, or banding.Minerals. Look at individual grains with the magnifying lens and see if you can identify any of the composite minerals. With larger grains, you may be able to identify what they are since you are also learning about mineral identification this week.Acid Test. Limestone contains a carbonate compound that dissolves in acid, producing bubbles. Test for bubbles with a few drops of vinegar.Igneous Rock Identification↓Texture/composition→FelsicIntermediateMaficPhaneritic (coarse)GraniteDioriteGabbroAphanitic (fine)RhyoliteAndesiteBasaltGlassyObsidianVesicularPumiceSedimentary Rock Identification↓Composition/Texture→ClasticChemicalBiogenicGrain size >2mm (coarse)Conglomerate Grain size 2 mm – 0.062 mm(medium)Sandstone Grain size < 0.062 mm (fine)Shale Calcite LimestoneFossiliferous LimestoneCalcite Calcareous tufa Metamorphic Rock Identification↓Composition/Texture→FoliatedNonfoliatedQuartz, feldspar, micaGneiss Mica visible crystalsMica schist Minerals not visible crystalsSlate Quartz QuartziteCalcite MarbleMinerals IdentificationMinerals are naturally-occurring, solid substances composed of chemical elements. This means that minerals, ranging from salt to rubies, are made up of compounds of elements that appear on the periodic table. Each type of mineral has a specific chemical composition and consistent physical properties. They are inorganic, not living or made up of living things. Minerals form a crystalline structure which gives rocks their "rough" texture. Rocks are mixtures, or aggregates, of different minerals. They are divided into three categories based on how they are formed: igneous, sedimentary, and metamorphic.Three tools are provided in your kit to aid you in identifying each mineral:Magnifying Lens: This is one of the most important tools for a mineralogist, because identifying minerals involves close observation.Nail: A nail is one of the many common items you can use to test the hardness of your specimens, along with a fingernail, penny, and piece of glass.Streak Plate: A streak plate is used to determine the color of a mineral in powder form.Many minerals can be identified using close observation and some simple tests. (Results are most consistent if you test on a freshly-broken surface of the mineral.) Try these steps on your specimens and see if you can identify each one using the characteristics provided in the online resources on mineral identification.Luster. Luster refers to the way a mineral reflects light. Is it shiny like metal? Then its luster is called metallic. It could also be adamantine (brilliant, like a diamond) or vitreous (glassy, like quartz.) Other common terms to describe luster are dull, earthy, silky, greasy, or pearly. Transparency is another characteristic that is related to luster. If you can see through the specimen, it is transparent. If light can pass through, but it is not see-through, the mineral is translucent. Minerals that do not let light through are called opaque.Color. Note the color of your specimen. This can be helpful for identifying metallic minerals, but many nonmetallic minerals have variable colors because of impurities. Quartz comes in many different colors and sapphires and rubies are different-colored varieties of the same mineral, corundum.Streak. A streak test determines the color of a mineral in powder form. In some cases, especially for metallic minerals, the streak may be a different color than the lump form of the mineral. In these cases, streak can greatly aid identification. In general, streak is more useful in identifying dark-colored minerals than light-colored specimens. The most common way to do a streak test is to rub your sample across a ceramic plate. If the mineral has a hardness level less than the streak plate (7) it will leave a colored streak of powder. (Wash the streak plate with soap and water as necessary.)Hardness. Mineral hardness is measured on the Mohs Hardness Scale. On each level of the scale a mineral can be scratched by something of the same or higher level, but nothing lower. The scale is made up of 10 minerals varying in hardness from 1 to 10. Number one is talc, because it is soft and very easy to scratch. Number 10 is the diamond, because it is the hardest natural substance and can only be scratched by another diamond.TalcGypsumCalciteFluoriteApatiteFeldsparQuartzTopaz or BerylCorundumDiamondNumber one is talc, because it is soft and very easy to scratch. Number ten is the diamond, because it is the hardest natural substance and can only be scratched by another diamond. You can test the hardness of your specimens using common materials like a nail, which has a hardness of about 5, or a streak plate with a hardness of 7. You can also try using a fingernail (2.5) a copper penny (3), or a steel file (6.5). Hold the specimen firmly and drag the nail across it. You will feel if it catcheson the mineral or if it just slides off it without biting into it. Use your magnifying lens to look for a scratch. If your specimen can be scratched by the nail (5) but not by a copper penny (3), its hardness is between 3.5 and 4.5.Other TestsThe above tests should allow you to identify the minerals in this kit, but there are other tests you could also perform on to help you identify unknown minerals using a field guide or web resource. Some of these tests are described below.Cleavage. Cleavage refers to how a mineral breaks. If it tends to break in smooth, flat planes it has cleavage. (If it breaks to form jagged edges only, it has fracture instead.) There are varying degrees of cleavage based on how clean the break is. If a mineral is transparent or translucent, you can often see cleavage planes with a magnifying lens, without having to break the mineral. Watch out! Sometimes crystal faces on a mineral look like cleavage planes, and vice versa.Magnetism. Some minerals (like magnetite) are magnetic. Test your specimens to see if they are attracted to an iron nail or magnet.Acid Test. Certain minerals, such as calcite, have carbonate compounds that dissolve in acid, producing bubbles. You can test this by roughing up a corner on your streak plate, then putting a few drops of vinegar on your specimen and watching for bubbles.Fluorescence. You can try shining a black light on your specimens to test for fluorescence. Some minerals absorb ultraviolet light and emit visible light, making them glow in the dark with various colors.Specific Gravity. Knowing a mineral's specific gravity can help with identification. Specific gravity is the weight of a mineral compared to the weight of an equal volume of water.Original ResourceHome Science Tools, Ltd. (2008a). Mineral study kit.To use the ID tables, be methodical. Start with luster, then the color of sample, then hardness, and so on.Non-metallic LusterColorHardnessStreakCleavage/fractureSpecial propertiesMineral nameDullWhite2WhiteGood one directionPowderyAlabaster gypsumDull to earthyBlack1-2BlackOne direction indistinctGreasy feelGraphiteDull to earthySilver to earthy red5.5-6.5RedFractureRed streakHematiteSilkyWhite or green1WhiteOne directionSilky-waxyTalcSilky to pearlyWhite2WhiteGood one directionFibrous habitSatin spar gypsumVitreousWhite7WhiteConchoidal fractureHardMilky quartzVitreousClear or white2-2.5WhiteCubic (3@90°)Salty tasteHaliteVitreousClear/green/purple/ yellow4white4 directionsGenerally transparent to translucentFluoriteVitreousWhite or clear3WhiteRhombohedral (3 not@ 90°)Reacts with acidCalciteVitreousWhite to clear2WhiteGood one direction, poor two directionsCrystal versionSelenite gypsumVitreous to dullTan, pink, or green6WhiteTwo directions about 90°OpaquePotassium FeldsparVitreous to submetallicBlack2.5-3Green to beigeOne directionFlat and blackBiotite micaVitreous to submetallicTan2-2.5TanOne directionFlat and tanMuscovite micaMetallic to Submetallic LusterColorHardnessStreakCleavage/fractureSpecial propertiesMineral nameMetallic Black1-2BlackOne direction indistinctSmudges easilyGraphiteMetallicBlack5.5-6.5BlackFractureWill solidly hold a magnetMagnetiteMetallicOff gold6-6.5Black to greenFractureFool's goldPyriteMetallic to dull/earthySilver to earthy red5.5-6.5RedFractureRed streakHematiteSubmetallic to vitreousBlack2.5-3Green to beigeOne directionFlat and blackBiotite
8 pages
Interviewing A Nurse Leader.edited
Nurse leaders play a significant role in the provision of healthcare by ensuring that their supervisees perform their task ...
Interviewing A Nurse Leader.edited
Nurse leaders play a significant role in the provision of healthcare by ensuring that their supervisees perform their tasks as expected to achieve ...
PHYC 240 Grossmont College Physics RC Circuits Currents Analysis Lab Report
I have a physics lab that I need to finish. There are directions that tells you what to follow and do.
PHYC 240 Grossmont College Physics RC Circuits Currents Analysis Lab Report
I have a physics lab that I need to finish. There are directions that tells you what to follow and do.
philosophical worldview
Topic: Philosophical Assumptions and ResearchEach of us has unique experiences and perceptions that shape what we believe ...
philosophical worldview
Topic: Philosophical Assumptions and ResearchEach of us has unique experiences and perceptions that shape what we believe about the world. These beliefs and underlying assumptions affect our natural approach to research. Some philosophical worldviews are more congruent with qualitative research, while others align with quantitative research. After reviewing the Reading and Study material for this module and considering the four philosophical worldviews discussed, please respond to the following:Which philosophical worldview most closely aligns with your perspective and the way that you view problems in the world? How so?Of the four philosophical worldviews, which ones are aligned with qualitative methodology?How does understanding the connection between philosophical worldview and research methodology assist in your research approach?Compare/contrast philosophical worldview with that of a Christian worldview. Are there any areas that are problematic or do most philosophical worldviewsappear to be congruent with a Christian worldview?Creswell describes the following four philosophical assumptions:Ontological (The nature of reality): Relates to the nature of reality and its characteristics. Researchers embrace the idea of multiple realities and report on these multiple realities by exploring multiple forms of evidence from different individuals’ perspectives and experiences.Epistemological (How researchers know what they know): Researchers try to get as close as possible to participants being studied. Subjective evidence is assembled based on individual views from research conducted in the field.Axiological (The role of values in research): Researchers make their values known in the study and actively reports their values and biases as well as the value-laden nature of information gathered from the field.Methodology (The methods used in the process of research): inductive, emerging, and shaped by the researcher’s experience in collecting and analyzing the data.
6 pages
Physics 9c Lab Report 3
We know to formula of parallel plate capacitance is b. charge on a capacitor connected to a battery b. effect of pulling ...
Physics 9c Lab Report 3
We know to formula of parallel plate capacitance is b. charge on a capacitor connected to a battery b. effect of pulling plates apart on energy ...
Similar Content
calorimetry
I am looking for lab report about the calorimetry experiment.in the attachment you will find the rubric that you must foll...
Florida National University Process of Bean Germination Questions Discussion
1. Type a brief summary here of what you discovered based on the results of your germination experiments. You need to indi...
What compounds are found in Krypton?
I'm doing a project about the element...
Physics live task
...
Please help with midterm study
Need help with chemistry midterm study!!!!!!!!!!...
WMU Organic Chemistry Questionnaire
Chm 230 FINAL Name: _____________________ Date: __________
Bishop – Take home
1) Draw the arrow pushing mechanism for th...
Exercise 6
Units of the y intercept = s² and the x intercept = kg. The value of k is found by evaluating the gradient....
Carbonic Acid Solution
Well there are 3 different solutions of carbonic acid (H2CO3) mentioned here, Now, what we want is...a mixture of solution...
Credentialing And Regulatory Process For Counsel In Arizon
Counselors are certified as Associate Licensed Counselors at the early phases of practice as well as Licensed Professional...
Related Tags
Book Guides
The House of the Seven Gables
by Nathaniel Hawthorne
Jane Eyre
by Charlotte Brontë
Fools Crow
by James Welch
The Red Badge of Courage
by Stephen Crane
Good Kids Bad City
by Kyle Swenson
Dandelion Wine
by Ray Bradbury
Girl Stop Apologizing
by Rachel Hollis
Catching Fire
by Suzanne Collins
Shattered - Inside Hillary Clintons Doomed Campaign
by Amie Parnes and Jonathan Allen
Get 24/7
Homework help
Our tutors provide high quality explanations & answers.
Post question
Most Popular Content
Liberty University Use of Proton Pump Inhibitors Discussion
From the assigned website found below, there are several significant issues with long-term use of proton pump inhibitors ( ...
Liberty University Use of Proton Pump Inhibitors Discussion
From the assigned website found below, there are several significant issues with long-term use of proton pump inhibitors (PPI). Discuss the symptoms for which PPIs are prescribed and the intended target of these drugs. Next, address an organelle that would also be affected by these drugs. Based on the function of that organelle, do the issues in the website make biological sense? Lastly, propose an alternative approach for a patient with these symptoms that would not require him or her to remain on PPIs long-term. Does your approach address the source of their symptoms?the website link: https://link.springer.com/article/10.1007%2Fs00535...500-600 wordsAPA style
San Diego State University Minerals Rocks and Radiometric Dating Lab Worksheet
Geologic Time and Rock & Mineral Identification Guide Adapted from Home Science Tools (2008b)Geologic Time (Radiometric Da ...
San Diego State University Minerals Rocks and Radiometric Dating Lab Worksheet
Geologic Time and Rock & Mineral Identification Guide Adapted from Home Science Tools (2008b)Geologic Time (Radiometric Dating Techniques): Answer the questions below.What unstable isotope would be best to refine the date of bones found in a cave hearth built by humans between 30,000 and 50,000 years ago?We find samples of an igneous rock demonstrate it has been through 4 half-lives. The test element has a half-life of 150 million years. How old is the rock?Argue for or against the following: A stone tool fashioned from a chunk of obsidian yields a date of 5,000,000 years old, therefore, the tool was made by a human 5,000,000 years ago.You are trying to figure out the age of what is thought to be a very old fossil with a volcanic ash layer immediately above the fossil. We know the fossil is at least more than 250 million years old. Should we use carbon 14 to date the fossil, or uranium 238 to date the volcanic ash layer, and why?If the parent isotope starts with 100 grams, but your samples yield only 12.5 grams of the parent isotope, how many half-lives have passed?Rock & Mineral IdentificationMinerals are naturally-occurring, solid substances composed of chemical elements. This means that minerals, ranging from salt to rubies, are made up of compounds of elements that appear on the periodic table. Each type of mineral has a specific chemical composition and consistent physical properties. They are inorganic, not living or made up of living things. Minerals form a crystalline structure which gives rocks their "rough" texture.Rocks are mixtures, or aggregates, of different minerals. Some rocks, like limestone, are composed mostly of one mineral, but the majority of rocks are made up of several major minerals. Rocks are divided into three categories based on how they are formed: igneous, sedimentary, and metamorphic.Igneous rocks form when hot magma from beneath the Earth's surface cools rapidly. Igneous rocks that cool beneath the surface (perhaps by hitting underground air pockets) are called intrusive or plutonic igneous rocks. Granite is an example. When the magma cools on the Earth's surface by flowing from the mouth of a volcano as lava, the resulting rock is called extrusive or volcanic rock. Basalt and obsidian are common examples of volcanic igneous rocks.Sedimentary rocks are formed by layers of sediment accumulating and being compressed together for extended periods of time. Most sedimentary rocks have layers, and they often contain fossils, as living material was buried in the sediment before it was compressed into rock. Common examples of these rocks are limestone, sandstone, and shale.Metamorphic rocks are rocks that have been changed by high pressure or heat. The crystal structure is changed, the texture often becomes coarser, and sometimes new minerals are formed in the process. Metamorphic rocks are the most complex group of rocks. Schist, slate, and gneiss (pronounced like "nice") are common examples.Identifying RocksThis kit includes 15 common rocks with examples from each category. Observe them closely with the included magnifying lens.Color. As a general rule, darker rocks are made of minerals with iron and magnesium, such as magnetite or biotite. Lighter-colored rocks may have lots of quartz, calcite gypsum, or halite in them.Texture. Is it coarse-grained or glassy-smooth? Is it dense with very small particles? Are minerals visible to the naked eye? The texture of a rock depends on what is it made of. For example, igneous rocks go by basic crystal size, and sedimentary rocks will have a texture of clastic, chemical, or biogenic, depending on how they formed. Metamorphic rocks will be identified by whether they are foliated or not foliated.Structure. Look for layers, which are often an indication of sedimentary rocks. Some volcanic igneous rock will have a sponge-like structure – pumice is an example of this. It is less dense than water, so it floats! Sedimentary rocks may have layers in them, but this is more common to shales. They can also have fossils, or banding.Minerals. Look at individual grains with the magnifying lens and see if you can identify any of the composite minerals. With larger grains, you may be able to identify what they are since you are also learning about mineral identification this week.Acid Test. Limestone contains a carbonate compound that dissolves in acid, producing bubbles. Test for bubbles with a few drops of vinegar.Igneous Rock Identification↓Texture/composition→FelsicIntermediateMaficPhaneritic (coarse)GraniteDioriteGabbroAphanitic (fine)RhyoliteAndesiteBasaltGlassyObsidianVesicularPumiceSedimentary Rock Identification↓Composition/Texture→ClasticChemicalBiogenicGrain size >2mm (coarse)Conglomerate Grain size 2 mm – 0.062 mm(medium)Sandstone Grain size < 0.062 mm (fine)Shale Calcite LimestoneFossiliferous LimestoneCalcite Calcareous tufa Metamorphic Rock Identification↓Composition/Texture→FoliatedNonfoliatedQuartz, feldspar, micaGneiss Mica visible crystalsMica schist Minerals not visible crystalsSlate Quartz QuartziteCalcite MarbleMinerals IdentificationMinerals are naturally-occurring, solid substances composed of chemical elements. This means that minerals, ranging from salt to rubies, are made up of compounds of elements that appear on the periodic table. Each type of mineral has a specific chemical composition and consistent physical properties. They are inorganic, not living or made up of living things. Minerals form a crystalline structure which gives rocks their "rough" texture. Rocks are mixtures, or aggregates, of different minerals. They are divided into three categories based on how they are formed: igneous, sedimentary, and metamorphic.Three tools are provided in your kit to aid you in identifying each mineral:Magnifying Lens: This is one of the most important tools for a mineralogist, because identifying minerals involves close observation.Nail: A nail is one of the many common items you can use to test the hardness of your specimens, along with a fingernail, penny, and piece of glass.Streak Plate: A streak plate is used to determine the color of a mineral in powder form.Many minerals can be identified using close observation and some simple tests. (Results are most consistent if you test on a freshly-broken surface of the mineral.) Try these steps on your specimens and see if you can identify each one using the characteristics provided in the online resources on mineral identification.Luster. Luster refers to the way a mineral reflects light. Is it shiny like metal? Then its luster is called metallic. It could also be adamantine (brilliant, like a diamond) or vitreous (glassy, like quartz.) Other common terms to describe luster are dull, earthy, silky, greasy, or pearly. Transparency is another characteristic that is related to luster. If you can see through the specimen, it is transparent. If light can pass through, but it is not see-through, the mineral is translucent. Minerals that do not let light through are called opaque.Color. Note the color of your specimen. This can be helpful for identifying metallic minerals, but many nonmetallic minerals have variable colors because of impurities. Quartz comes in many different colors and sapphires and rubies are different-colored varieties of the same mineral, corundum.Streak. A streak test determines the color of a mineral in powder form. In some cases, especially for metallic minerals, the streak may be a different color than the lump form of the mineral. In these cases, streak can greatly aid identification. In general, streak is more useful in identifying dark-colored minerals than light-colored specimens. The most common way to do a streak test is to rub your sample across a ceramic plate. If the mineral has a hardness level less than the streak plate (7) it will leave a colored streak of powder. (Wash the streak plate with soap and water as necessary.)Hardness. Mineral hardness is measured on the Mohs Hardness Scale. On each level of the scale a mineral can be scratched by something of the same or higher level, but nothing lower. The scale is made up of 10 minerals varying in hardness from 1 to 10. Number one is talc, because it is soft and very easy to scratch. Number 10 is the diamond, because it is the hardest natural substance and can only be scratched by another diamond.TalcGypsumCalciteFluoriteApatiteFeldsparQuartzTopaz or BerylCorundumDiamondNumber one is talc, because it is soft and very easy to scratch. Number ten is the diamond, because it is the hardest natural substance and can only be scratched by another diamond. You can test the hardness of your specimens using common materials like a nail, which has a hardness of about 5, or a streak plate with a hardness of 7. You can also try using a fingernail (2.5) a copper penny (3), or a steel file (6.5). Hold the specimen firmly and drag the nail across it. You will feel if it catcheson the mineral or if it just slides off it without biting into it. Use your magnifying lens to look for a scratch. If your specimen can be scratched by the nail (5) but not by a copper penny (3), its hardness is between 3.5 and 4.5.Other TestsThe above tests should allow you to identify the minerals in this kit, but there are other tests you could also perform on to help you identify unknown minerals using a field guide or web resource. Some of these tests are described below.Cleavage. Cleavage refers to how a mineral breaks. If it tends to break in smooth, flat planes it has cleavage. (If it breaks to form jagged edges only, it has fracture instead.) There are varying degrees of cleavage based on how clean the break is. If a mineral is transparent or translucent, you can often see cleavage planes with a magnifying lens, without having to break the mineral. Watch out! Sometimes crystal faces on a mineral look like cleavage planes, and vice versa.Magnetism. Some minerals (like magnetite) are magnetic. Test your specimens to see if they are attracted to an iron nail or magnet.Acid Test. Certain minerals, such as calcite, have carbonate compounds that dissolve in acid, producing bubbles. You can test this by roughing up a corner on your streak plate, then putting a few drops of vinegar on your specimen and watching for bubbles.Fluorescence. You can try shining a black light on your specimens to test for fluorescence. Some minerals absorb ultraviolet light and emit visible light, making them glow in the dark with various colors.Specific Gravity. Knowing a mineral's specific gravity can help with identification. Specific gravity is the weight of a mineral compared to the weight of an equal volume of water.Original ResourceHome Science Tools, Ltd. (2008a). Mineral study kit.To use the ID tables, be methodical. Start with luster, then the color of sample, then hardness, and so on.Non-metallic LusterColorHardnessStreakCleavage/fractureSpecial propertiesMineral nameDullWhite2WhiteGood one directionPowderyAlabaster gypsumDull to earthyBlack1-2BlackOne direction indistinctGreasy feelGraphiteDull to earthySilver to earthy red5.5-6.5RedFractureRed streakHematiteSilkyWhite or green1WhiteOne directionSilky-waxyTalcSilky to pearlyWhite2WhiteGood one directionFibrous habitSatin spar gypsumVitreousWhite7WhiteConchoidal fractureHardMilky quartzVitreousClear or white2-2.5WhiteCubic (3@90°)Salty tasteHaliteVitreousClear/green/purple/ yellow4white4 directionsGenerally transparent to translucentFluoriteVitreousWhite or clear3WhiteRhombohedral (3 not@ 90°)Reacts with acidCalciteVitreousWhite to clear2WhiteGood one direction, poor two directionsCrystal versionSelenite gypsumVitreous to dullTan, pink, or green6WhiteTwo directions about 90°OpaquePotassium FeldsparVitreous to submetallicBlack2.5-3Green to beigeOne directionFlat and blackBiotite micaVitreous to submetallicTan2-2.5TanOne directionFlat and tanMuscovite micaMetallic to Submetallic LusterColorHardnessStreakCleavage/fractureSpecial propertiesMineral nameMetallic Black1-2BlackOne direction indistinctSmudges easilyGraphiteMetallicBlack5.5-6.5BlackFractureWill solidly hold a magnetMagnetiteMetallicOff gold6-6.5Black to greenFractureFool's goldPyriteMetallic to dull/earthySilver to earthy red5.5-6.5RedFractureRed streakHematiteSubmetallic to vitreousBlack2.5-3Green to beigeOne directionFlat and blackBiotite
8 pages
Interviewing A Nurse Leader.edited
Nurse leaders play a significant role in the provision of healthcare by ensuring that their supervisees perform their task ...
Interviewing A Nurse Leader.edited
Nurse leaders play a significant role in the provision of healthcare by ensuring that their supervisees perform their tasks as expected to achieve ...
PHYC 240 Grossmont College Physics RC Circuits Currents Analysis Lab Report
I have a physics lab that I need to finish. There are directions that tells you what to follow and do.
PHYC 240 Grossmont College Physics RC Circuits Currents Analysis Lab Report
I have a physics lab that I need to finish. There are directions that tells you what to follow and do.
philosophical worldview
Topic: Philosophical Assumptions and ResearchEach of us has unique experiences and perceptions that shape what we believe ...
philosophical worldview
Topic: Philosophical Assumptions and ResearchEach of us has unique experiences and perceptions that shape what we believe about the world. These beliefs and underlying assumptions affect our natural approach to research. Some philosophical worldviews are more congruent with qualitative research, while others align with quantitative research. After reviewing the Reading and Study material for this module and considering the four philosophical worldviews discussed, please respond to the following:Which philosophical worldview most closely aligns with your perspective and the way that you view problems in the world? How so?Of the four philosophical worldviews, which ones are aligned with qualitative methodology?How does understanding the connection between philosophical worldview and research methodology assist in your research approach?Compare/contrast philosophical worldview with that of a Christian worldview. Are there any areas that are problematic or do most philosophical worldviewsappear to be congruent with a Christian worldview?Creswell describes the following four philosophical assumptions:Ontological (The nature of reality): Relates to the nature of reality and its characteristics. Researchers embrace the idea of multiple realities and report on these multiple realities by exploring multiple forms of evidence from different individuals’ perspectives and experiences.Epistemological (How researchers know what they know): Researchers try to get as close as possible to participants being studied. Subjective evidence is assembled based on individual views from research conducted in the field.Axiological (The role of values in research): Researchers make their values known in the study and actively reports their values and biases as well as the value-laden nature of information gathered from the field.Methodology (The methods used in the process of research): inductive, emerging, and shaped by the researcher’s experience in collecting and analyzing the data.
6 pages
Physics 9c Lab Report 3
We know to formula of parallel plate capacitance is b. charge on a capacitor connected to a battery b. effect of pulling ...
Physics 9c Lab Report 3
We know to formula of parallel plate capacitance is b. charge on a capacitor connected to a battery b. effect of pulling plates apart on energy ...
Earn money selling
your Study Documents