Chemistry

Define melting point

Minimal amount of energy for reaction

Define condensation

the process of gas changing to liquid. Gas loses heat, slows down, causing the molecules to become closer together making liquid (ex: water droplets on a cold glass)

Define evaporation

the process of liquid changing to gas. This occurs when the molecules of liquid gain enough energy to break away (ex: boiling water)

Define sublimation

the process of a solid changing to gas WITHOUT becoming a liquid. This happens when the molecules of a solid gain enough energy to break away (ex: dry ice)

Define deposition

The process of a gas turning into a solid WITHOUT becoming a liquid. This occurs when the molecules of the gas slow down and become close together (ex: frost formation)

Define a solid

Definite shape and volume, incompressible, high vibrational motion, low translational motion

Define a liquid

Indefinite shape, definite volume, takes on shape of container, incompressible, moderate vibrational and translational motion

Define gas

Indefinite shape and volume, compressible, low vibrational motion, high translational motion, takes on shape of container

Define pressure

Decreases volume, increases pressure (Boyles law), compacts particles

Define an acid

More H+, acidic, low pH

Define a base

More OH-, alkaline, high pH

Define covalent bonds

When atoms share electrons to achieve stability

Polar= unequal

Non polar- equal

Define ionic bonds

when atoms transfer, gain or lose electrons to achieve stability. Usually between a metal and non metal

Define cohesion

similar molecules binding with other molecules

Define adhesion

different molecules binding to other molecules