Heating Curves

Front

In a heating curve, diagonal lines indicate temperature is __________, while flat lines indicate temperature is __________.

Back

Changing, constant

Front

What state(s) of matter are present at D-E?

Back

Liquid-gas

Front

Between which points is the temperature of the substance remaining constant?

Back

B-C, D-E

Front

The melting point of the sample is __________.

Back

-60 ºC

Front

Which process takes the longest to occur?

Back

boiling

Front

What is a heating curve?

Back

A graph that shows the change in temperature of a substance as it is heated over time.

Front

What happens during the melting phase on a heating curve?

Back

The solid turns into a liquid at a constant temperature.

Front

What is the boiling point of a substance?

Back

The temperature at which a liquid turns into a gas.

Front

What occurs at point C on a heating curve?

Back

The substance is completely in the liquid state.

Front

What is the significance of flat lines on a heating curve?

Back

They indicate phase changes where temperature remains constant.