Chemistry 130

Apr 30th, 2015
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University of Michigan - Ann Arbor
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Section 1.2 experiment: observation of natural phenomena carried out in controlled manner so results can be duplicated and rational conclusions can be made. law: concise statement of fundamental relationship or regularity of nature hypothesis: tentative explanation of some regularity of nature theory: tested explanation of basic nature phenomenon

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Section 1.2experiment: observation of natural phenomena carried out in controlled manner so results can be duplicated and rational conclusions can be madelaw: concise statement of fundamental relationship or regularity of naturehypothesis: tentative explanation of some regularity of naturetheory: tested explanation of basic nature phenomenoncannot be completely proven scientific method: general process of advancing scientific knowledgeSection 1.3mass: quantity of mattermatter: whatever occupies space and is perceivable by senseslaw of conservation of mass: "the total mass remains constant during a chemical change"weight: force of gravity exerted on objectSection 1.4two principle ways of classifying matterphysical state (gas, liquid, solid)chemical constitution (element, compound, mixture)compressibility/expansibility define statesvapor: gaseous form of matter that normally exists as liquid or solidphysical change: change in form of matter, but not chemical identitydissolvingdistillationchemical change/reaction: change in which one or more forms of matter are changed in one or more new kinds of matterrustingphysical property: characteristic that can be observed w/o changing chemical identitychemical property: characteristic involving chemical changesubstance: matter that cannot be separated further by physical processalways has same characteristic propertiesmixture: material that can be separated further by physical processmost materialshas varia

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