Cooling curve: practical

12 questions

1. Which of the following is the most appropriate way to show the change in temperature over time?
2. The term used to describe the energy transfer from an object to its surroundings as it cools is...
3. True or false? In the gas state, particles have enough energy to move freely and are not held in fixed positions.
4. What happens to the particles of a substance when it is heated and reaches its boiling point?
5. The temperature at which a substance changes from solid to liquid is known as its...
6. Match the state of matter to the description about forces of attraction.
7. On a heating curve, what does a plateau indicate?
8. The point on a cooling curve where a liquid starts to solidify is called the ___ point.
9. How does energy transfer during the cooling of a substance?
10. Which state changes are shown in this heating curve?
11. At what temperature (℃) does this substance begin to melt? (give only the number, not the unit)
12. Why does a substance's temperature not change during a phase transition, despite continued heating?

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