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Heating and Cooling of Substances: Energy Transfer and Temperature Change

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Heating and Cooling of Substances: Energy Transfer and Temperature Change

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Questions and Answers

What happens when a substance is heated?

Energy is transferred to the substance, and the atoms/molecules move faster. (correct)

The volume of the substance decreases as the atoms/molecules get closer together.

Energy is transferred from the substance, and the atoms/molecules move slower.

The atoms/molecules themselves expand in size.

How does temperature relate to the speed of atoms/molecules?

Temperature is a measurement of the average speed of atoms/molecules. (correct)

Temperature is a measurement of the total speed of all atoms/molecules.

Temperature is not related to the speed of atoms/molecules.

Temperature is a measurement of the number of atoms/molecules in the substance.

What happens to the volume of a substance when it is cooled?

The volume decreases as the atoms/molecules get closer together. (correct)

The volume changes randomly and is not related to the cooling of the substance.

The volume stays the same as the atoms/molecules do not change in size.

The volume increases as the atoms/molecules spread further apart.

How do the collisions between atoms/molecules change when a substance is warmed?

The collisions become stronger and more frequent. Signup and view all the answers

What happens to the atoms/molecules themselves when a substance is heated or cooled?

The atoms/molecules do not change in size, but their speed changes. Signup and view all the answers

What happens to the speed of atoms/molecules when a substance is cooled?

The speed decreases Signup and view all the answers

How does the volume of a substance change when atoms/molecules lose energy?

The volume decreases Signup and view all the answers

What is the relationship between temperature and the speed of atoms/molecules?

Higher temperature means faster speed Signup and view all the answers

When a substance is warmed, what happens to the collisions between atoms/molecules?

Collisions become stronger and more frequent Signup and view all the answers

How do the collisions between atoms/molecules change when a substance is cooled?

Collisions become weaker and less frequent Signup and view all the answers

What happens to the volume of a substance when the atoms/molecules spread further apart?

Volume increases Signup and view all the answers