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10 Cards in this Set
- Front
- Back
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in the world its either |
form of energy or matter |
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chemists identified |
light heat electricity and magnetism as substances |
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pure substance |
- all samples have the same proportions of components - a material with only one set of properties |
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mixture |
a material composed of more than one substance |
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element |
a pure substance that cannot be broken up - composed of only one type of atom |
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compound |
- pure substance that can be broken down (decomposed) - pure substance composed of more than one type of atom |
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chemical species |
all the particles of matter collectively |
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metals |
- good conductors of heat and electricity - malleable(can be pounded into thin sheets) - ductile (can be drawn into wires) and lustrous (shiny) |
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metals are not actually hard, it is actually |
alloys, mixtures containing metals, which are hard |
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metal oxides react with water to form |
bases Na2O + H2O > 2NaOH |
