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21 Cards in this Set
- Front
- Back
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Matter
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Anything that occupies space and has mass
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Mass
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quanity of matter that a substance possesses
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Inertia
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Property of mass to resist a change of position or motion
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Unit of mass
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grams
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Unit of Volume
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mL or cm^3
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Density
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Mass/Volume
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3 states of Matter
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Solid Liquid Gas
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Solid
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definite size definite shape
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Liquid
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definite volume; takes place of container
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Gas
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indefinite shape & indefinite volume
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Substances
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Substances that can be divided into the smallest particle and still has the properties of the substance
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Element
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made up of only one kind of matter
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Compound
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2 or more atoms joined together
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Molecule
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smallets unit of a compound
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Physical Properties
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Can be observed by our senses
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Chemical Properties
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Obsereved in regard whether or not a substance reacts with another substance
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Exothermic Reaction
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Chemical change noticed by heat or light
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Endothermic Reaction
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Chemical change by change in energy
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Activation Energy
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Energy necessary to get the reaction going by increasing energy of reactants
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Law of Conversation of Matter (Lavoisier - 1785)
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Matter can neither be created nor destroyed but only changed from one form to another
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Law of Definite Composition
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A chemical compound always contains exactly the same portion of elements by mass
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