Firstly you need to know that a gas has the most internal energy, a liquid has the second most internal energy and a solid has the least internal energy. So, if the internal energy in a gas decreases, it becomes a liquid. The change of state from a gas to a liquid is called condensation. (freezing would be going from a liquid to a solid, so if a liquid's internal energy decreased)
Knowing the different words for changes of states (e.g. freezing, melting, condensing, evaporating) is really important for science so make sure you learn them!
Knowing the different words for changes of states (e.g. freezing, melting, condensing, evaporating) is really important for science so make sure you learn them!
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