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Element
Substance made of only one type of atom
Molecule
2 or more atoms chemically combined
Compounds
Two or more elements chemically combined
Mixtures
2 or more substances mingled together but not chemically combined
Name 3 properties of compounds
Elements in a compound are always of a set ratio
Properties of elements used are different to the properties of the compound
Usually a heat change when separated
Three properties about mixtures
Amounts of substances in a mixture can vary
Usually easy to separate
Properties are similar to elements in mixture
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