Unit 8B: Phase Changes Summative Review

Front

What is the difference between heat and temperature?

Back

Heat is the flow of thermal energy, while temperature is a measurement of kinetic energy.

Front

In a calorimetry experiment, which direction does heat flow?

Back

Heat always flows from the warmer substance to the cooler substance.

Front

What happens when two objects at different temperatures come into contact?

Back

Heat will flow from the warmer object to the cooler one until they both have an equal temperature.

Front

What occurs when a metal cube at 70°C is placed in water at 20°C?

Back

The metal loses heat while the water gains heat.

Front

What type of process is sublimation?

Back

Sublimation is an endothermic process.

Front

Define endothermic process.

Back

An endothermic process is one that absorbs heat from the surroundings.

Front

Define exothermic process.

Back

An exothermic process is one that releases heat to the surroundings.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact no longer transfer heat, as they have reached the same temperature.

Front

What is the significance of specific heat capacity?

Back

Specific heat capacity is the amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius.

Front

How does heat transfer occur?

Back

Heat transfer occurs through conduction, convection, and radiation.