Have happened to the flame? Give a reason for your answer in question (c) above.
HL
LESSON TWELVE
END OF TOPIC EXERCISE
1. What state of matter is smoke?
2. What form of energy changes ice to water?
3. Name the form of energy possessed by water at 100°C
4. Give the difference between evaporation and condensation.
5. How does heat from the sun reach the ground?
6. Which method of heat transfer enables people to sun bathe?
7. How do the silvery walls of a vacuum flask reduce heat loss?
8. State any two ways in which heat transfer by conduction is important
people.
9. What process will you use to recover salt which has dissolved in w
in What form of energy does a falling stone have before it reaches
by Mercury is used in thermometers instead
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