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Chemistry: Atoms

ACS Chapter 2

QuestionAnswer
Energy moving atoms and molecules have:
Kinetic Energy anything that has mass and is moving has
As the speed increases: energy increases
As the speed decreases: energy decreases
Conduction process of transferring energy by direct contact
Warming increasing energy
Cooling decreasing energy
Rule of Conduction Energy can only be transferred from sonething at a higher temperature to somehing at lower temperature.
Objects can be cooled by allowing energy to be transferred to something colder
Temperature measure of the average kinetic energy of the atoms or molecules of a substance
Heat the energy that is transferred from a substance at a higher temperure to a substance at a lower temperature.
Melting Changing from a solid to a liquid
Melting the motion of the particles increase in a solid
Melting point the exact temperature at which on object begins to change from a solid to a liquid.
Sublimation changing from a solid to a gas, skipping the liquid stage
Evaporation changing from a liquid to a gas
Increase in temperature Increases evaporation rate (rate of vaporization)
Condensation changing from a gas to a liquid
Condensation slowing of particles from a gas to a liquid.
Cooling increases the rate of condensation
Freezing slowing down of molecules so that their attraction overcomes their motion.
Deposition changing from a gas to a solid skipping the liquid stage
Created by: SMMCS-SCI