8th Grade Vocab
Section 1: Matter
 Physical Properties: properties that can be observed without changing the identity of the
substance
 Chemical Properties: properties describing how a substance changes into something new
 Physical Change: the change of a substance in which the identity of said substance remains the
same
 Chemical Change/Reaction: The change of a substance into a new and different substance
 Melting Point: the point at which a solid changes to a liquid
 Freezing Point: the point at which a liquid changes to a solid
 Boiling Point: the point at which a liquid changes to a gas
 Phase Changes: adding or removing energy to result in a change of volume, but not of mass
 Sublimation: solid  gas
 Deposition: gas  solid
 Vaporization: liquid  gas (boiling)
 Evaporation: liquid  gas (stagnant)
 Melting: solid  liquid
 Freezing: liquid  solid
 Condensation: gas  liquid
 Density: the amount of mass in a given volume of matter (D = M / V)
 Mass: The amount of matter in an object
 Matter: Anything that takes up Space or has mass
 Volume: the amount of space an object takes up (L x W x H OR Displacement Method)
 Flammability: the ability of matter to burn
 Reactivity: the ability of matter to combine chemically with other substances
 Oxidation: reaction involving Oxygen that happens slowly
 Combustion: reaction involving oxygen that happens violently (explosions/burning)
 Corrosion: rusting
 Energy: The ability to cause changes in matter
 Kinetic Energy: the energy of moving matter
 Temperature: the amount of heat present in (or absent from) an object (Also called “Heat
Energy”
 Reactants: What exists before a chemical reaction occurs
 Products: what exists after a chemical reaction occurs
 Chemical equation: the way to represent chemical reactions using a formula with Reactants on
the left and products on the right
 Reaction Rate: Whether a reaction occurs quickly or slowly
 Concentration: the number of particles of a substance in a given volume.
 Catalyst: substance that increases the rate of a chemical reaction.
 Surface Area: the amount of matter exposed to and able to react with another substance in a
reaction
 Law of Conservation of Mass: Matter cannot be created or destroyed in chemical reactions
 Law of Motion: An object in Motion will stay in motion, an object at rest will stay at rest, unless
acted upon by an outside force
 Antoine Lavoisier: Scientist who made the Law of Conservation of Mass
8th Grade Vocab
Section 1: Matter

Physical Properties:

Chemical Properties:

Physical Change:

Chemical Change/Reaction:

Melting Point:

Freezing Point:

Boiling Point:

Phase Changes:

Sublimation:

Deposition:

Vaporization:

Evaporation:

Melting:

Freezing:

Condensation:

Density:

Mass:

Matter:

Volume:

Flammability:

Reactivity:

Oxidation:

Combustion:

Corrosion:

Energy:

Kinetic Energy:

Temperature:

Reactants:

Products:

Chemical equation:

Reaction Rate:

Concentration:

Catalyst:

Surface Area:

Law of Conservation of Mass:

Law of Motion:

Antoine Lavoisier: