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Questions and Answers
What happens to the speed of atoms/molecules when a substance is heated?
What happens to the speed of atoms/molecules when a substance is heated?
- The speed of atoms/molecules remains the same
- The atoms/molecules expand and contract randomly
- The speed of atoms/molecules decreases
- The speed of atoms/molecules increases (correct)
What happens to the volume of a substance when it is cooled?
What happens to the volume of a substance when it is cooled?
- The volume decreases (correct)
- The volume remains the same
- The volume increases
- The volume changes unpredictably
Which of the following is a correct statement about temperature?
Which of the following is a correct statement about temperature?
- Temperature is a measurement of the number of atoms/molecules
- Temperature is a measurement of the size of atoms/molecules
- Temperature is a measurement of the average speed of atoms/molecules (correct)
- Temperature is a measurement of the mass of atoms/molecules
What happens to the collisions between atoms/molecules when a substance is warmed?
What happens to the collisions between atoms/molecules when a substance is warmed?
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Which of the following statements is true about the atoms/molecules themselves during thermal expansion or contraction?
Which of the following statements is true about the atoms/molecules themselves during thermal expansion or contraction?
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