solid - has a specific shape, liquid - this form can be poured and takes the shape of a container, gas - invisible and spreads out to fill up the container it is in, mass - how much "stuff" is in an object, matter - anything that has weight and takes up space, mixture - matter that can be mixed together and easily separated, solution - pieces of matter that can be combined, but cannot be easily separated, volume - the amount of space an object takes up,

Matter

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