Phase Change Diagrams

Front

Material in this phase has a __________ volume and an _______________ shape.

Back

definite volume and indefinite shape.

Front

Between minute 9 and 13, the added energy increases the ____________ of the substance.

Back

temperature.

Front

Beyond POINT E, the substance is still in the __________ phase, but the molecules are moving _________ as indicated by the increasing temperature.

Back

gaseous phase, faster.

Front

By POINT E, the substance is completely in the ____ phase.

Back

gas.

Front

The energy put into the substance between minutes 13 and 18 converted the substance from ___________ to ____________ state.

Back

liquid to gas.

Front

What is a phase change diagram?

Back

A graphical representation showing the states of matter (solid, liquid, gas) and the transitions between them as a function of temperature and pressure.

Front

Define 'melting point'.

Back

The temperature at which a solid becomes a liquid.

Front

Define 'boiling point'.

Back

The temperature at which a liquid becomes a gas.

Front

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

Back

The temperature remains constant during a phase change, even as heat is added or removed.

Front

What is the significance of POINT E in a phase change diagram?

Back

It indicates the point at which a substance is completely in the gas phase.