Page 250 - Primary Five Science

25. Mention the 2 common liquids used in mercury

26. Give a reason why each of the liquids above is used

27. State the advantages of using mercury instead of alcohol

in thermometers

28. Why is water not used in thermometers?

29. State 2 advantages of using alcohol in thermometers in-

stead of mercury

30. State the freezing and boiling points of water

31. Why is carbon dioxide more effective to put out fire than

water?

32. A part from the above, mention 2 ways how fire can be

put out