Chemistry Final 2

What is the term for the change of matter from one state to another due to changes in temperature or pressure?

• Chemical reaction

• Interconversion of state

• Physical change

• Decomposition

What type of change occurs during the interconversion of state?

• Chemical change

• Physical change

• Nuclear change

• Biological change

What happens to the particles of a substance during a physical change in state?

• The particles change into different substances.

• The particles remain the same.

• The particles disappear.

• The particles become larger.

Which of the following is true about the chemical properties of a substance during interconversion of state?

• They change significantly.

• They remain the same.

• They cannot be determined.

• They become unpredictable.

Why are physical changes considered relatively easy to reverse?

• New substances are formed.

• No new substances are formed during interconversions of state.

• They require no energy.

• They happen quickly.

Which of the following is an example of an interconversion of state?

• Rusting of iron

• Melting of ice to water

• Burning wood

• Baking a cake

What factors can cause the interconversion of states?

• Only changes in pressure

• Only changes in temperature

• Changes in temperature and pressure

• Changes in color

What is melting?

• When a liquid turns into a gas

• When a gas turns into a liquid

• When a solid changes into a liquid

• When a solid becomes a gas

What type of energy is required for the melting process?

• Potential energy

• Thermal energy

• Kinetic energy

• Nuclear energy

What happens to the particles of a solid during melting?

• They stop moving completely.

• They move more freely.

• They change into different particles.

• They become denser.