OL U4 Zone 2

Front

What is the formula to calculate the heat energy needed for vaporization?

Back

q = m ΔH_vap

Front

What does ΔH_fus represent in the formula q = m ΔH_fus?

Back

Heat of fusion

Front

What does ΔH_vap represent in the formula q = m ΔH_vap?

Back

Heat of vaporization

Front

What state(s) of matter are present at D-E on a heating curve?

Back

Liquid-gas

Front

What is the boiling point of a substance if its heating curve shows a plateau at 60 C?

Back

60 C

Front

Define heat of fusion.

Back

The amount of heat required to convert a unit mass of a solid into a liquid at its melting point.

Front

Define heat of vaporization.

Back

The amount of heat required to convert a unit mass of a liquid into a vapor at its boiling point.

Front

What is the significance of a heating curve?

Back

It shows the changes in temperature and state of a substance as it is heated.

Front

What happens to the temperature of a substance during a phase change?

Back

The temperature remains constant during a phase change.

Front

What is the relationship between temperature and kinetic energy?

Back

As temperature increases, the kinetic energy of the particles increases.