Any substance that contains only one kind of atom. Cannot be broken down into simpler substances.
Substance made of the combined atoms of two or more elements. Compounds have a constant composition.
Matter that is pure, either an element or compound. Not a mixture.
A mixture in which different parts can be easily distinguished. Easily separated by physical means.
A mixture in which different materials are blended evenly so that the mixture is the same throughout; also called a solution. Easily separated by physical means.
Anything that has mass and takes up space
Matter that is two or more substances blended together