The molecules move at a faster rate. The molecules become more massive. The molecules expand and become wider. The molecules separate into atoms of hydrogen and oxygen.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Anita heats a beaker containing water. As the temperature of the water increases, which change to the water molecules occurs?
Possibilities:
- The molecules move at a faster rate.
- The molecules become more massive.
- The molecules expand and become wider.
- The molecules separate into atoms of hydrogen and oxygen.

The molecules move at a faster rate.