Podcast
Questions and Answers
Which of the following is NOT an example of a classroom experiment covered in the lesson?
Which of the following is NOT an example of a classroom experiment covered in the lesson?
- Observing the formation of condensation on a cold surface
- Video of indicator paper changing color in a hot water bath and a cold water bath
- Watching dry ice sublime into a gas (correct)
- Blue and yellow food coloring in hot water and cold water
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 speed of atoms/molecules is unaffected by heating
- The speed of atoms/molecules decreases
- The speed of atoms/molecules increases (correct)
Which of the following statements about temperature is true?
Which of the following statements about temperature is true?
- Temperature is a measure of the potential energy of a substance
- Temperature is a measure of the average speed of atoms/molecules (correct)
- Temperature is a measure of the kinetic energy of individual atoms/molecules
- Temperature is a measure of the total energy of a substance
If a substance loses energy, what happens to the temperature?
If a substance loses energy, what happens to the temperature?
Which of the following materials is suggested for reviewing the concepts of evaporation and boiling?
Which of the following materials is suggested for reviewing the concepts of evaporation and boiling?
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 volume of a substance when its atoms/molecules move faster?
What happens to the volume of a substance when its atoms/molecules move faster?
What is the process called when molecules in the gaseous state slow down and become a liquid?
What is the process called when molecules in the gaseous state slow down and become a liquid?
Which phase change involves molecules at the surface of a liquid gaining enough energy to enter the gaseous state?
Which phase change involves molecules at the surface of a liquid gaining enough energy to enter the gaseous state?
What is the boiling point of a substance defined as?
What is the boiling point of a substance defined as?
Why does evaporation occur more quickly with warmer temperatures?
Why does evaporation occur more quickly with warmer temperatures?
What happens to the collisions between atoms/molecules when a substance is cooled?
What happens to the collisions between atoms/molecules when a substance is cooled?
