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chapter 3

TermDefinition
Matter Everything that has mass and takes up space
Element The ingredients that make up other things that cannot be broken down anymore
Metals Good conductors of heat and electricity and can also bend without breaking
Nonmetals They do not conduct heat or electricity well and can either be a liquid or a gas
Semimetals They are sometimes metals and sometimes nonmetals
Atom The smallest part of an element that still has the element's properties
Atomic Theory States that everything is made up of atoms
Compound Something that is made up of 2 or more elements
Molecule The smallest part of a compound that still has the compound's properties
Proton Has a positive charge
Neutron Has a neutral charge
Electron Has a negative charge
Solid Has a definite shape and volume. Particles are very close together.
Liquid Definite volume but no shape. Particles move past each other.
gas No definite shape or volume.Particles spread out everywhere.
Plasma Like a gas, but conducts electricity like a metal. Occurs with high temps or electricity.
Melting Point When solid turns to liquid
Evaporation When liquid becomes a gas
Condensation When gas becomes a liquid
chemical change One or more types of matter change into other matter
Law Of Conservation Of Mass In a chemical change, matter cannot be created or destroyed. It can only be converted.
Created by: krmallur
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