Phases of matter Flashcards
1
Q
an explanation of how particles in matter behave.
A
kinetic theory
2
Q
temp. at which a solid begins to liquefy.
A
melting point
3
Q
amount of energy required to change a substance from the solid phase to the liquid phase at its melting point.
A
heat of fusion
4
Q
temp. at which the pressure of the vapor in the liquid is equal to the external pressure acting on the surface of the liquid.
A
boiling point
5
Q
amount of energy required for the liquid at its boiling point to become a gas.
A
heat of vaporization.
6
Q
spreading of particles throughout a given volume until they are uniformly distributed.
A
Diffusion
7
Q
matter consisting of of positively and negatively charged particles
A
Plasma
8
Q
increase in the size of a substance when the temp is increased
A
Thermal expansion
