UNIT 3 REVIEW- ENERGY & STATES OF MATTER

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of the particles in a substance, which is related to its temperature.

Front

What is specific heat capacity?

Back

Specific heat capacity is the amount of heat energy required to raise the temperature of 1 gram of a substance by 1 degree Celsius.

Front

What is the Heat of Vaporization?

Back

The Heat of Vaporization is the amount of energy required to convert a unit mass of a substance from liquid to gas at constant temperature and pressure.

Front

What does the line segment A-B represent in a heating curve?

Back

The line segment A-B represents the solid state of a substance below its melting point.

Front

What does the line segment B-C represent in a heating curve?

Back

The line segment B-C represents the phase change from solid to liquid (melting) where thermal energy increases.

Front

What does the line segment C-D represent in a heating curve?

Back

The line segment C-D represents the liquid state of a substance at a constant temperature.

Front

What does the line segment D-E represent in a heating curve?

Back

The line segment D-E represents the phase change from liquid to gas (vaporization) where phase energy increases.

Front

What is the formula to calculate heat energy?

Back

Q = mcΔT, where Q is heat energy, m is mass, c is specific heat capacity, and ΔT is the change in temperature.

Front

What happens to thermal energy when a cold object is placed in a warmer environment?

Back

The thermal energy of the cold object increases as it absorbs heat from the warmer environment.

Front

What is the relationship between temperature and thermal energy?

Back

As the temperature of a substance increases, its thermal energy also increases.