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Homework Week 9
Day 1
1.Vocab - Define the following
Word
Definition
Irregularly shaped
Something that cannot be measured easily or that is oddly
shaped
Independent variable
a variable whose variation does not depend on that of another.
constant
occurring continuously over a period of time.
subatomic
smaller than or occurring within an atom.
Valence electrons
an electron that is associated with an atom, and that can
participate in the formation of a chemical bond
solubility
the property of a solid, liquid, or gaseous chemical
substance called solute to dissolve in a solid, liquid, or
gaseous solvent
1b. Convert the following:
i. 839.2 mm → km
ii. 6.29 kL → cL
1c. Change real number (above) to scientific notation:
2. Describe what is occurring in this image:
3. Highlight the correct answers below for Chlorine (Cl):
a. Solid/Liquid/Gas (@ room temperature)
b. Metal/Nonmetal/Metalloid
c. Right/Staircase/Left (on periodic table)
4. Looking at the phase change diagram below, what is the temperature range of liquid
water?
5. What does KHDbdcm represent? What real number represents each? How do you
write each in scientific notation?
Day 2
1. Vocab - Match the word to the definition
Words
Definitions
metalloids
relating to, or resembling metal or metals
Metallic
Covalent bond
a chemical change that is accompanied
by an absorption of heat
Endothermic
metallic
A chemical bond formed by the sharing of
one or more electrons, between atoms.
Bond forms between 2 nonmetals.
Covalent bond
subscript
any chemical element which has
properties in between those of metals and
nonmetals; can be viewed as a diagonal
section on the Periodic Table.
Metalloids
endothermic
a number, positioned next to and a little
below an element. Represents the
number of atoms of that element in the
substance.
Subscript
2. Looking at the periodic table in your notes, which other elements share family
characteristics with Carbon (C) ?
I. Boron (B)
Iii. Tin (Sn)
V. Nitrogen (N)
ii. Germanium (Ge)
iv. Antimony (Sb)
vi. Lead (Pb)
3.
a. 2, 2, 1
b. 1, 2, 1
c. 1, 4, 1
4. Which process does the North Anna Power Plant in Louisa County, Virginia use to
produce energy?
a.
b.
c.
d.
Nuclear fusion
Nuclear fission
Nuclear isotopes
Nuclear meltdown
4b. Discuss some of the pros/cons of this type of energy.
5. Using your notes: Identify the following as physical (P) or chemical properties (C).
__P__ Oxygen is odorless and colorless.
____ The density of water is 1.0g/cm 3
____ Copper conducts electricity.
____ Water is a liquid.
____ Silver necklaces tarnish & turn green. ____ Gold is nonflammable.
Day 3
1. Vocab - Define the following
Word
Definition
fission
altitude
Most potential energy
waterwheel
2.
a.
b.
c.
d.
Fossils
Replication
Variations
Cloning
3.
a. Organisms
b. Organelles
c. systems
4. Describe physical and chemical weathering.
5. What is the role of water in power generation? How many types of power generation
use water? List all the types.
Day 4
1. Vocab - Match the word to the definition
Words
Definitions
compound
the process by which water vapor in the
air is changed into liquid water.
weight
Acids with a low pH of around 1 and are
very reactive
Strong acid
the force of gravity on an object
condensation
a substance formed when two or more
chemical elements are chemically bonded
together. Two types of chemical bonds
common; are covalent bonds and ionic
bonds
1b. Convert the following:
i. 23.9 mg → g
ii. 4.0 km → mm
1c. Change the real number (above) to scientific notation:
2. Highlight all of the following that are types of energy:
potential
chemical
heat
thermal
temperature
radiant
power
nuclear
fuel
light
mechanical
kinetic
3. Describe the process of photosynthesis (give each step), what type of energy is
involved in each step?
4. Place the following under renewable/nonrenewable.
Biofuel, Solar, Natural gas, Hydroelectric, Wind, Oil, Coal, Nuclear
Renewable
Nonrenewable
Solar,Wind,Biofuel,Hydroelectric
Coal,Oil,Natural Gas,Nuclear
5. Discuss the impacts to the food web above, if the frog becomes extinct.