6th: Chapter 4: Thermal Energy SG

the total kinetic and potential energy of all the particles of an object

• thermal energy

• heat

• temperature

the energy that is transferred from a warmer object to a cooler object

• thermal energy

• heat

• temperature

a measure of the average kinetic energy of the particles in a substance

• thermal energy

• heat

• temperature

the freezing point of water

absolute zero: particles stop moving

actually below zero: lower than the freezing temperature of water, but the particles are STILL moving

When a substance is changing state,

• the temperature stops moving until it finishes changing state.

• the temperature continues to rise as it changes state.

• the temperature continues to fall when changing state.

What should you consider when thinking about thermal energy?

• the mass and temperature of a substance/amount

• just the temperature of the substance

• just the mass/amount of the substance

Substance A: 70 degrees Celsius and 50 milliliters

Substance B: 70 degrees Celsius and 60 milliliters

If substance A and B are the same type of liquid, which has more thermal energy?

• A

• B

• There is not enough data to know

Substance A: 80 degrees Celsius and 50 milliliters

Substance B: 70 degrees Celsius and 60 milliliters

If substance A and B are different types of liquid, which has more thermal energy?

• A

• B

• There is not enough data to know