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21 Cards in this Set
- Front
- Back
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anything that has mass and takes up space
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matter
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a substance that cant be broken down into simpler substances by chemical means
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element
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the smallest unit of an element that contains the chemical properties of that element
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atom
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a group of atoms that are held together by chemical forces; the smallest unit of matter that can exist by itself and retain all of a substance's chemical properties
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molecule
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a substance made of atoms of two or more different elements joined by chemical bonds
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compound
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shows how many atoms of each element are in a unit of a substance
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chemical formula
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a sample of matter, either a single element or a single compound, that has definite chemical and physical properties (chemically combined)
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pure substance
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a combination of two or more substances that are not chemically combined
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mixture
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substances are not evenly distributed
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heterogeneous
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components are evenly distributed
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homogeneous
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able to be mixed
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miscible
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not able to be mixed
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immiscible
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the physical form of a substance
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state
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the temperature and pressure at which a solid becomes a liquid
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melting point
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the temperature and pressure at which a liquid becomes a gas
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boiling point
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the ratio of the mass to the volume of a substance
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density
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the ability to burn
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flammibility
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the capacity of a substance to combine chemically with another substance
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reactivity
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a change of matter from one form to another without a change in chemical properties
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physical change
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a change that occurs when one or more substances change into entirely new substances with different properties
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chemical change
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a physical change when molecules of one substance spread out into another without changing the molecules
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dissolving
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