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Heat Transfer and Temperature Quiz

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Questions and Answers

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

The speed of atoms/molecules decreases

The speed of atoms/molecules increases (correct)

The atoms/molecules themselves expand

The speed of atoms/molecules remains the same

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

The volume remains the same

The atoms/molecules themselves shrink

The volume increases

The volume decreases (correct)

What is temperature a measurement of?

The strength of collisions between atoms/molecules

The distance between atoms/molecules

The size of atoms/molecules

The average speed of atoms/molecules (correct)

What happens to the collisions between atoms/molecules when a substance is warmed?

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

Do the atoms/molecules themselves expand or shrink when a substance is heated or cooled?

The atoms/molecules themselves do not expand or shrink Signup and view all the answers

According to the kinetic molecular theory, what is the primary characteristic of gas molecules?

They are dispersed randomly throughout space with high speeds Signup and view all the answers

What happens to the collisions between gas molecules as the temperature increases?

The collisions become more frequent Signup and view all the answers

According to the principle of equipartition of energy, what is true about the average translational energy of gas molecules?

All molecules possess equal average translational energy, regardless of their mass Signup and view all the answers

When gases expand, what happens to their potential and kinetic energy?

Potential energy decreases, and kinetic energy increases Signup and view all the answers

What is the primary assumption made by the kinetic theory of gases regarding gas particles?

They are idealized point masses moving randomly and independently Signup and view all the answers