Chemistry Ch.10 States of Matter

melting

solid to liquid

vaporization

liquid to vapor

sublimation

solid to vapor

condensation

vapor to liquid

freezing

liquid to solid

Kinetic theory

theory that explains the states of matter based on the concept that particles in all states of matter are always in motion

triple point

point in which all three states of matter can exist at the same time

collision theory

theory that says atoms, ions and molecules can form products when they collide, as long as the particles have enough heat energy.

kilopascal(kPa)

international unit for pressure

amorphous solids

solids that lack an ordered internal structure; denotes random arrangement of atoms.

phase diagram

a diagram that shows the condition at which a substance exist as a solid, liquid, or vapor

allotropes

one or two different molecular forms of an element are in the same physical state.

melting point

temperature at which a substance changes from solid to liquid

crystal lattice

The 3d arrangement of ions in an ionic compound

kinetic energy

the energy an object has because of its movement

boiling point

temperature at which the vapor pressure of a liquid is just equal to the external pressure on the liquid

vapor pressure

the pressure created when the vapor above water in a sealed container collides with the container walls

atmospheric pressure

pressure made by air molecules in the air, made from the air molecules colliding with objects