Question

The water molecules on the left are at a higher temperature than the water molecules on the right. Which statement is not true?

1) The water molecules on the left have more kinetic energy than the water molecules on the right.
2) The water molecules on the left have a higher average speed than the water molecules on the right.
3) The water molecules on the left have a lower average speed than the water molecules on the right.
4) The water molecules on the left have a higher potential energy than the water molecules on the right.

Answer 1

The water molecules on the left have a lower average speed than the water molecules on the right is not true.

Step-by-step explanation:

The statement that is not true is: 3) The water molecules on the left have a lower average speed than the water molecules on the right.

When water molecules are at a higher temperature, they have more kinetic energy than lower temperature water molecules, as stated in statement 1. Additionally, molecules at a higher temperature have a higher average speed than molecules at a lower temperature, as stated in statement 2. Furthermore, the water molecules at a higher temperature also have higher potential energy than the water molecules at a lower temperature, as stated in statement 4. Therefore, the only statement that is not true is statement 3.