Composition of Matter Ø Everything in the universe is made of matter Ø Matter takes up space mass Ø Mass is a measure of the amount of matter in the substance Ø NOT the same Ø Weight is a measure of the pull of gravity on an object Question: Is the mass of an object the same on the moon as it is on the Earth? Is its weight the same? (Hint: Gravitational pull on the moon is 1/6 of that on the Earth.) Ø Matter exists in 4 states – Ø Solids Ø Liquids have a definite volume but no definite shape; they can be poured
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