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Front

What happens to heat when we hold an ice cube?

Back

Heat moves from our hands into the ice cube.

Front

What is the freezing point of water in degrees Celsius?

Back

0 C

Front

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

Back

60 C

Front

In which region of a heating curve does boiling occur?

Back

Region 4

Front

In which region of a heating curve does melting occur?

Back

Region 2

Front

What is the definition of a heating curve?

Back

A heating curve is a graph that shows the change in temperature of a substance as heat is added over time.

Front

What occurs during the melting phase of a substance?

Back

The substance changes from solid to liquid as it absorbs heat.

Front

What occurs during the boiling phase of a substance?

Back

The substance changes from liquid to gas as it absorbs heat.

Front

How does temperature change during a phase change?

Back

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

Front

What is the significance of the plateau in a heating curve?

Back

The plateau indicates a phase change where temperature remains constant while the substance absorbs heat.