Chemistry- Unit 2

endothermic

absorbs heat from its surroundings causing a cooling effect

exothermic

releases heat energy to its surroundings causing a warming effect

Transitions between states of matter are known as ______

phase changes

Name: Melting

what is the phase change?

solid to liquid

Name: freezing

what is the phase change?

liquid to solid

Name: vaporization

what is the phase change?

liquid to gas

Name: condensation

what is the phase change?

gas to liquid

Name: sublimation

what is the phase change?

solid to gas

Name: deposition

what is the phase change?

gas to solid

An increase in temperature represents an increase in the ______ _____ of particles

kinetic energy

For a solid, the heat of fusion, is the what?

the amount of the heat required to melt 1 gram of a solid at its melting point

For a liquid, the heat of vaporization is the what?

amount of heat required to vaporize 1 gram of a liquid at its boiling point

What is the heat of vaporization of water?

2260 jules per grams

In a phase diagram, the at which all three lines intersect is called what?

the triple point