Fish, like other animals, need oxygen to survive. oxygen gas dissolved in water can be used by fish, which remove it from the water by means of their grills. classify the change that occurs when oxygen dissolves in water

In the following scenario above, when the oxygen dissolves in water, it is likely because of a physical change. A physical change is when the property of a substance changes its state but it does not change it's own property of which the oxygen dissolves but it didn't change into a new substance.