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Element
Pure substance made of one type of atom |
Compound
Pure substance made of two or more elements that are chemically combined |
Homogeneous Mixture
Mixture with constant composition |
Heteorogeneous Mixture
Mixture that does not have a constant composition |
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Examples - gold, silver, carbon, oxygen and hydrogen |
Examples - water, carbon dioxide, sodium bicarbonate, carbon monoxide |
Examples - salt water, pure air, metal alloys, seltzer water |
Examples - sand, soil, chicken soup, pizza, chocolate chip cookies |