Which of the following statements about matter is false?
a. the amount of matter increases slightly as water changes state.
b. the amount of matter in an object remains the same during changes in state.
c. matter is neither created nor destroyed.
d. liquids, gases, and solids are all forms of matter.

The statement that is incorrect I believe would be A. The amount of matter increases slightly as water changes state.

I think the correct answer from the choices listed above is option A. The statement that is false about matter is that the amount of matter increases slightly as water changes state. This statement is very far from being true. There is no known correlation between the amount of matter and the change of state in water.