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13 Cards in this Set
- Front
- Back
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Anything that has mass and takes up space |
Matter |
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A substance that can not be seperated or broken down into simpler substances by chemical means |
Element |
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The smallest unit of an element that maintains the chemical properties of that element |
Atom |
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A group of atoms that are held together by chemical forces; Smallest Unit of matter that can exist by itself and retain all of a substances chemical properties |
Molecule |
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A substance made up of Atoms of two or more different elements joined by chemical bonds |
Compound |
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A sample of matter, either a single element or a single compound that has definite chemical and physical properties |
Pure substance |
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A combination of two or more substances that are not chemically combined |
Mixture |
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The temperature and pressure @ which a solid becomes a liquid |
Melting point |
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Temperature and pressure @ which a liquid becomes a gas |
Boiling point |
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The ratio of the mass of a substance to the volume of the substance |
Density |
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The capacity of a substance to combine chemically with another substance |
Reactivity |
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A change of matter from one form to another with out change in chemical properties |
Physical change |
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A change that occurs when one or more substances change into entirely NEW substances with different properties |
Chemical Change |
