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7th grade Science

Chapter 2 -- Changes of State

HEAT Energy that is transferred from a substance at a higher temperature to a substance at a lower temperature.
TEMPERATURE A measure of the average kinetic energy of the atoms or molecules of a substance
CONDUCTION The transfer of energy between materials by the collisions of particles
ENERGY Property of objects which can be transferred to other objects or converted into different forms, but cannot be created or destroyed.
EVAPORATION When a substance changes from a liquid to a gas; molecules going into the air
MOLECULE Smallest unit of a substance that has all the properties of that substance
ATOMS The smallest particle of a substance that can exist by itself or be combined with other atoms to form a molecule
CONDENSATION When a substance changes from a gas to a liquid
FREEZING POINT The temperature when a liquid is cooled and changes to a solid.
MELTING POINT The temperature when a solid is heated and is changing to a liquid.
KINETIC ENERGY The energy of a moving object
SUBLIMINATION When a substance changes directly from a sold to a gas.
DEPOSITION When a substance changes from a gas to a solid
RULE OF CONDUCTION Energy can only be transferred from something at a higher temperature to something with a lower temperature.
Created by: espoon