Boyle's law: pressure of a gas is inversely proportional to its volume when temperature is constant. For example if the pressure slowly rises in a container, the volume will slowly drop. P = 1/V. Charles's Law: The volume of a gas is directly proportional to its temperature when pressure is constant. For example if bread is heated up its volume will increase. V = T

EXPLAIN AN ISOTHERMAL PROCESS

An isothermal process is one where the temperature is constant. These processes are "slow" meaning that the gas is passed through pressure that vary at slow rate. Thus the internal energy of the gas doesn't change and the molecules aren't rapidly forced apart or closer resulting in the heat from the environment still taking affect on the gas. In this type of scenario, Boyle's law can be used.

EXPLAIN AN ADIABATIC PROCESS

An adiabatic process...