Random
A pure sustance
Element
The smallest unit of matter. These make up all things
Atoms
A change in matter where the atoms stay the same
Physical Change
State of matter where the particles are spread far apart and there is little attraction between them (Solid, Liquid, or Gas)
Gas
Phase change from solid to liquid
Melting
Chemical reactions that give off heat
Exothermic
Neutrally charged sub-atomic particle
Neutron
How tightly packed an objects atoms are. Mass divided by Volume
Density
State of matter where atoms are packed closely together. The atoms in this state vibrate in place (Solid, Liquid, or Gas)
Solid
Phase change from liquid to gas
Evaporation
Two or more elements that are chemically combined
Compund
Positively charged sub-atomic particle
A change in matter where the atoms rearrange themselves so that they are not the same substance as before
Chemical Change
State of matter where atoms slide past each other. This state of matter takes the shape of the container it is in (Solid, Liquid, or Gas)
Liquid
Phase change from gas to liquid
Condensation
Products ----> Reactants
Chemical Equation
or
Chemical Reaction
Negatively charged sub-atomic particle
Electron
How much "stuff" is in something. Often thought of as weight
Mass
Law in science that says that matter cannot be created or destroyed
Law of Conservation of Mass
Phase change from gas to solid
Deposition
Chemical reactions that take in heat
Endothermic
The middle of the atom, consists of protons and neutrons
Nucleus
How much space something takes up
Volume
Kinetic Theory of Matter
Phase change from solid to gas
Sublimation