matter - anything that has mass and takes up sapce , mass - amount of matter in an object , volume - amount of space something takes up , density - amount of matter in a given space , atom - smallest unit of matter, molecules - two or more atoms bonded together , physical properties - characteristics of a substance, density, shiny, , states of matter - solid, liquid, gas , kinetic energy - energy of matter in motion , vapor - gaseous state of a solid or liquid , element - pure substance listed on the Periodic Table of Elements, example Oxygen , endothermic - energy absorbed, exothermic - energy released, boiling point - temperature liquid changes to a gas , solid - definite shape and volume, liquid - no definite shape but definite volume, gas - no definite shape or voume, plasma - ionized gas, extensive properties - depends on sample size, intensive properties - does not depend on sample size,

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