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8 terms

matter 3rd grade clow

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solid
any object that has a definite shape and has tightly packed molecules
liquid
a state of matter that can be easily poured and takes the shape of its surroundings
gas
a state of matter that is almost always invisible and expands freely
physical change
a type of change in matter that can always be changed back
chemical change
another type of change that can not be changed back and causes a change in the chemicals
matter
anything that takes up space and has weight (mass)
element
matter that is made up of a single type of particle
atom
the simplest form of matter