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Science Chapter 3

TermDefinition
Matter Everything that has mass and takes up space.
Element The ingredients that make up all other substances.Can't be broken into other substances.
Metals Good conductors of electricity and heat.can bend without breaking.Most have a gray color.
Nonmetals Don't conduct heat/electricity very well.May be gas or solid.
Semi-Metals Sometimes like metals and sometimes like nonmetals.
Atom The smallest part of a element that still acts like a element.
Atomic Theroy States that everything is made of atoms.
Compound A type of matter that is made of two or more elements.
Molecule Smallest part of a compound that still acts like a compound.
Proton Positive charge.Found in the nucleus.
Neutron No charge.Found in the nucleus.
Electron Negative charge.Orbits around the nucleus
Solid Has a definite shape and volume. Particles are very close together,and don't move past each other. Keeps shape
Liquids Definite volume but now definite shape. Particles glide by each other.
Gas No Definite volume or shape. particles spread. Can be squeezed into a smaller container
Plasma Like a gas, but conducts electricity like a metal.
Melting Point When liquid to solid or solid to liquid. same temp as freezing point.
Evaporation when a liquid turns to a gas
Condunsation When a gas turns to a liquid
Created by: alex-fulkerson
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