Liquid – particles are able to move, yet are close together and most are touching, No – some are moving more quickly than others. Some have enough energy to ‘escape’, Evaporation – Liquid to gas, Energy is added to the system. The internal energy increases. The energy of some individual particles is high enough to allow them to break the forces of attraction and leave the substance, Particles are moving. Hands represent energy increase, More dense (add more particles) & A way to represent forces of attraction.

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