8D Heating & Cooling Curves

Front

What is a heating curve?

Back

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

Front

What happens to a substance at its boiling point?

Back

At the boiling point, a substance changes from a liquid to a gas, and the temperature remains constant during this phase change.

Front

What is the significance of potential and kinetic energy in a heating curve?

Back

Potential energy is associated with the phase changes (e.g., melting, boiling), while kinetic energy relates to the temperature increase of the substance.

Front

What occurs during segment CD of a heating curve for water?

Back

During segment CD, the potential energy is constant while the kinetic energy increases as the water is heated.

Front

What is the melting point of a substance?

Back

The melting point is the temperature at which a solid becomes a liquid, and it remains constant during the phase change.

Front

What phase change occurs when heat is removed from a liquid?

Back

When heat is removed from a liquid, it can undergo freezing, changing from a liquid to a solid.

Front

How does temperature change during a phase change?

Back

During a phase change, the temperature remains constant while the substance absorbs or releases heat.

Front

What is the boiling point of a substance?

Back

The boiling point is the temperature at which a liquid turns into a gas, and it is a characteristic property of the substance.

Front

What happens to the kinetic energy of a substance as it is heated?

Back

As a substance is heated, its kinetic energy increases, leading to an increase in temperature.

Front

What is the relationship between heat and temperature?

Back

Heat is the energy transferred to or from a substance, while temperature is a measure of the average kinetic energy of the particles in that substance.