3SG continued their investigations into states of matter by looking into how we can affect the evaporation of water. We noticed how water quickly turns to water vapour when heat is directly applied by a hotplate, then how it condenses back to water when the cold lid was placed on top. We compared this to water left on the windowsill, which is continuing to evaporate much more slowly. We then recorded our observations of this reversible process and wrote a conclusion.