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.
Ascientist is measuring the pressure that is exerted by each of the following gases in the atmosphere: carbon dioxide, oxygen, and nitrogen. which term most likely describes what she is measuring?