The first one is wrong because water has a ph level of 7.5. the second one is correct because the molecules in the liquid expand until it reaches its freezing point. the third one is wrong because liquids are less dense than solids. the fourth one is wrong because water dissolves into water.
Answer from: Quest
i'm assuming that the correct answer is indeed the first one/ "a"..
Answer from: Quest
i think it's letter a.
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