HEL 7th GRADE SCIENCE PROBLEM ABOUT KINETIC ENERGY OF ATOMS TEMPERATURE Think about what you've learned about how particle motion is related to temperature.

Select all of the statements that are true.

1. The total kinetic energy of the particles in a substance determines the substancels temperature.

2. How hot or cold a substance is depends on how fast its particles are moving.

3. All the particles in a substance are moving at the same speed, and that speed determines the substancels temperature.

4. If the particles in two pure substances have the same average speed, the substances must have the same temperature.