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ch. 3


matter something that has mass or takes up space
element ingredients that make up all the other substances
metals good conductor of heat and electricity. bend without breaking
nonmetals not good at conductor with heat and electricity
semimetals something like metal and something like nonmetal
atoms smallest part of an element that still acts like a element
atomic theory idea that everything is made of small particles
compound type of matter made of two or more elements
molecules smallest particle of compound that still acts like a compound
proton positive charge. found in the nucleus
neutron no charge. found in the nucleus
electrons negative charge. orbit the nucleus
liquid Definite volume but no space, particles can move past each other, takes shape of container
gas No definite volume and no shape, particles spread out evenly and takes shape of container, can be put in smaller place
soild definite shape and volume, particles are very close together, and don't move past each other, keep shape
plasma Like a gas, but conduct elecricity like a metals. occurs with high temps or electric charge.
melting point melting = solid to liquid
evaporation when a liquid become a gas
condensation when gases become liquid
Created by: Lauren-bailey