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15 Cards in this Set
- Front
- Back
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Chemistry
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the study of compostition, structure, and properties of matter, the processes that matter undergoes, and the energy changes that accompany these processes
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Mass
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measure of the amount of matter
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Matter
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anything that has mass and takes up space
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Atom
Element |
smallest unit of an element that maintains the chemical identity of that element
pure substnce that cannot be broke down into simpler, stable substances and is made of only one type of atom |
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Compound
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substance that can be broken down into simple stable substances. Each compound is made from te atoms of two or more elements that are chemically bonded
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Physical Property
Chemical Property |
characterisic that can be observed or measured without changing the identity of the substance
relates a substance's ability to undergo changes that transform it into different substances |
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Physical Change
Chemical Change |
change in substance that does not involve a change n the identity of the substance
one or more substances are converted into different substances |
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States of Matter
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solid- definite volume and shape
liquid- definite volume but idefinite shape gas- neither definite volume or shape plasma- high-temperature physical state of matter in which atoms lose most of their electrons, particles that make up atoms |
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Extensive Properties
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depend on the amount of matter that is present
--volume, mass |
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Intensive Properties
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don not depend on the amount of matter present
--melting point, boiling point, density, ability to conduct electricity |
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Reactants
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substances that react in a chemical change
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Products
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substances that are formed by the chemical change
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Mixture
Pure Substance |
blend of two or more kinds of matter, each of which retains its own identity and properties
fixed composition --every sample has exactly the same properties --every sample has exactly same composition |
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Groups/Families
Periods |
vertical columns of periodic table
horizantal rows of elements in periodic table |
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Homgeneous
Heterogeneous |
uniform in composition
--solutions not uniform throughout |
