What are intermolecular forces? What do intermolecular forces have to do with the states of matter?

Question

I tried googling it, but they gave me really fancy answers and i need something that i will be able to understand

Answer 1

http://en.wikipedia.org/wiki/Intermolecular_force

Based on its molar mass, water should be a gas but because of intermolecular forces water is a liquid at room temperature.