6.4 internal energy

Question 1

What does increasing the temperature of a substance do?

Answer 1

Increases its internal energy

Question 2

What does the strength of the forces of attraction between the particles of a substance explain?

Answer 2

It explains why is a solid, a liquid, or a gas

Question 3

What happens to the kinetic energy of a substances particles when they’re heated?

Answer 3

If the temperature rises the kinetic energy of its particles increases

Question 4

What happens to the potential energy of a substances particles when they’re heated?

Answer 4

If it melts or it boils, the potential energy of its particles increases

Question 5

What is the pressure of a gas on a surface caused by?

Answer 5

It is caused by the particles of the gas repeatedly hitting the surface

Question 6

What is internal energy?

Answer 6

The energy the particles have in a substance due to their individual motion and positions