The temperature at which a substance begins to change from liquid to gas.
100
what does mass mean?
the amount of matter in something.
200
What is the definition of condensation?
the phase change in which a gas changes to a liquid: condensation releases heat energy to the surroundings.
200
what is the definition of melting point?
the temperature at which a substance begins to change phases from solid to liquid.
300
what is the meaning of density?
The amount of mass in a given volume; density equals mass over volume.
300
what does phase mean?
a state of matter.
400
What is the definition of deposition?
the phase change in which a gas becomes a solid by passing the liquid stage, bypassing the liquid phase.
400
what is a physical change?
a change in a physical properties.
500
What is the definition of heat energy?
the form of energy arising from the motion of all the particles in a system; heat energy moves between things that are at different temperatures; also called thermal energy.