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A change in which one or more new substances are formed.
CHEMICAL CHANGE
The process of rearranging the atom in substances into new substances.
CHEMICAL REACTION
A change in the properties of matter that does not change the substances in the matter.
PHYSICAL CHANGE
A type of vaporization where the liquid evaporates throughout the entire substance.
BOILING
The change from the liquid state to the solid-state.
FREEZING
A law that states that changes to matter do not create or destroy mass.
CONSERVATION OF MASS
Matter that can change shape but has a fixed volume.
LIQUID
The change of state from a gas to a liquid.
CONDENSATION
Matter that has a fixed shape and volume.
SOLID
Matter that can change its shape and its volume.
GAS
The change of state from liquid to gas.
VAPORIZATION
Type of vaporization that occurs when particles on the surface of a liquid gain enough heat energy to leave the surface of the liquid.
EVAPORATION
The process in which a solid becomes a gas without becoming a liquid first.
SUBLIMATION
A measure of the average kinetic energy of the particles in a substance.
TEMPERATURE
A material that conducts heat easily.
CONDUCTOR
The total amount of kinetic and potential energy of all the particles in a substance.
THERMAL ENERGY
A theory that states that a pure substance is made up of particles that cannot be further divided without changing it into a different substance.
PARTICLE THEORY OF MATTER
The state when heat transfer between two objects ceases.
THERMAL EQUALIBRIUM
The process by which a gas becomes a solid without forming a liquid in between.
DEPOSITION
The transfer of thermal energy between two objects that are touching.
CONDUCTION
A substance that does not allow heat or sound to pass through.
INSULATOR
The change in the length, width, height, area, or volume of matter due to a change in its temperature.
THERMAL EXPANSION
The transfer of thermal energy by the movement of a fluid such as liquid or gas.
CONVECTION
A theory that helps explain physical properties of matter, such as temperature and state.
KINETIC THEORY OF MATTER
Energy that comes from a source and travels at the speed of light.
RADIATION