Three states: Solid (s), Liquid (l), Gas (g)

Red are gasses in standard state, 25 degrees, 1 atm (atmospheric pressure)

Noble gasses are to the right, do not combine with other elements.

Pressure, p

$p = F/a$

SI Unit pressure, Pascal

$1 Pa = 1 N/m^2$

1 Newton: $1 N = 1kg*m/s^2$

1 atm = 101325 Pascal (atmospheric pressure)

1 bar $10^5$ bar

High pressure = more collision = more molecules or higher speed