Podcast
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?
- They decrease in speed
- They increase in speed (correct)
- They remain at the same speed
- Their speed is unaffected
Which of the following statements about temperature is true?
Which of the following statements about temperature is true?
- Temperature is a measure of the kinetic energy of individual atoms/molecules
- Temperature is a measure of the average speed of atoms/molecules (correct)
- Temperature is a measure of the total energy of a substance
- Temperature is a measure of the potential energy of a substance
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 is unaffected
- The volume remains the same
- The volume decreases (correct)
- The volume increases
What is the relationship between energy transfer and a change in temperature?
What is the relationship between energy transfer and a change in temperature?
How does the speed of atoms/molecules change when a substance is cooled?
How does the speed of atoms/molecules change when a substance is cooled?
What happens to the volume of a substance when it is heated?
What happens to the volume of a substance when it is heated?
What happens to the atoms/molecules themselves when a substance is heated or cooled?
What happens to the atoms/molecules themselves when a substance is heated or cooled?
What is the relationship between temperature and the average speed of atoms/molecules?
What is the relationship between temperature and the average speed of atoms/molecules?
加热物质意味着能量从物质中转移出去。
加热物质意味着能量从物质中转移出去。
当物质被冷却时，原子/分子的速度会加快。
当物质被冷却时，原子/分子的速度会加快。
当原子/分子运动更快时，温度会降低。
当原子/分子运动更快时，温度会降低。
温度是原子/分子平均速度的测量。
温度是原子/分子平均速度的测量。
当物质被加热时，原子/分子会失去能量并运动缓慢。
当物质被加热时，原子/分子会失去能量并运动缓慢。
当物质被冷却时，物质的体积会增加。
当物质被冷却时，物质的体积会增加。
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