Heating Curves

Front

What is a heating curve?

Back

A heating curve is a graphical representation of the temperature change of a substance as it is heated over time, showing phase changes and temperature changes.

Front

What does a diagonal line on a heating curve represent?

Back

A diagonal line indicates that the temperature of the substance is changing.

Front

What does a flat line on a heating curve represent?

Back

A flat line indicates that the temperature of the substance remains constant during a phase change.

Front

At which point on a heating curve does melting occur?

Back

Melting occurs at the flat line segment where the temperature remains constant while the solid turns into a liquid.

Front

What is the boiling point of a substance on a heating curve?

Back

The boiling point is indicated by a flat line segment where the temperature remains constant while the liquid turns into 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 though heat is being added.

Front

What is the significance of point B on a heating curve?

Back

Point B typically represents the melting point of the substance, where solid and liquid phases coexist.

Front

How can you identify the melting point on a heating curve?

Back

The melting point is identified at the flat line segment where the temperature does not change as the solid melts into a liquid.

Front

What is the state of the substance at point A on a heating curve?

Back

At point A, the substance is in the solid state.

Front

What is the state of the substance at point C on a heating curve?

Back

At point C, the substance is in the liquid state.