molecule - tiny particles that make up matter, atom - the particles that make up matter, solid - state of matter that keeps its shape and its particles are very close together, liquid - state of matter that fills a container, but doesn't stay in 1 shape (it flows), energy - the ability to do work, boiling point - the temperature a liquid turns into a gas (100 C), melting point - the temperature a solid turns into a liquid (0C), independant variable - the part of the experiment we change, controlled variable - the part of the experiment that stays the same to keep things fair, volume - how much space the object takes up, density - how close together the particles are, solution - a mixture that is a liquid, matter - a physical substance that takes up space and has weight, hypothesis - educated guess based on observation, expand - when molecules grow further apart (usually when they get warmer), contract - when molecules grow closer together, they ______, observation - looking at an object closely, physical property - things you can see, touch, or measure about an object, Data - the collection of facts, water - the only matter God created to exist as solid, liquid, and gas. It expands when it freezes,

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