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chapter 3

QuestionAnswer
matter everything that has mass and takes up space
elements substances. that cant be broken down into other things
metals good conductors of electricity. can heat without heating. most are grey ad shiny
nonmetals do not conduct heat / electricity very well. may be a gas or a solid.
sentimetals sometimes like metals and sometimes like nonmetals
atom the smallest part of an element that still acts like that element
atomic theory states that everything is made of atoms.
compound a type of matter made of two or more elements
molecule smallest particle of a compound that still acts like that compound
proton positive charge. found in the neucleus
neutron no charge. found in the neucleus
electron negative charge. orbits the neucleus
solid has a definite shape and volume. particles are very close together,and don't move past each other. keeps shape.
liquid definite shape and volume. particles can move past each other. and don't move past each other . takes shape of container
gas no definite volume or shape. particles spread out evenly and take shape of container. can be squeezed into smaller volume.
plasma like a gas but conducts electricity like a metal. occurs with high temps or electric charge.
melting point when solid to liquid or liquid to solid same temp as freezing point
evaporation when liquids become a gas
condensation when gas become a liquid. gas particles touch a cold surface and the temperature drops
Created by: mason-fairchild
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