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Ch.11 Les.1
Science vocab ch11 les1
Term | Definition |
---|---|
matter | anything that has mass and takes up space |
atom | small particle that is the building block of matter |
substance | matter with a composition that's always the same |
element | substance made of only one kind of atom |
molecule | two or more atoms that are held together by chemical bonds and act as a unit |
compound | substance made of two or more elements that are chemically joined in a specific combination |
mixture | matter that can vary in composition |
Homogeneous Mixture | a mixture in which two or more substances are evenly mixed, but not bonded together (ex: sugar water) |
Heterogeneous Mixture | a mixture in which the substances are not evenly mixed (ex: trail mix) |