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6. What is the name given to the ions not shown in ionic equations?

  • Spectator ions
  • they have no name
  • Disregarded ions
  • Discarded ions

7. Acid + metal carbonate => ... what?

  • salt + water + carbon dioxide
  • salt + hydrogen
  • salt + water
  • salt + carbon dioxide

8. Which indicator is colourless in acids?

  • Phenolphthalein
  • Litmus
  • Methyl orange
  • Universal Indicator

9. All acids have H+ ions.

  • True
  • False

10. Water dissolves most covalent compounds and some ionic compounds.

  • False
  • True

11. What are the stages in cleaning water?

  • chlorination, sedimentation, filtration
  • filtration, sedimentation, chlorination
  • sedimentation, filtration, chlorination
  • filtration, chlorination, sedimentation

12. Hard water contains...

  • Ca or Al ions
  • Ni or Ca ions
  • Ca or Mg ions
  • Mg or C ions

13. How can people solve the problem of scum?

  • Use a detergent.
  • Distil the water before it is used.
  • Use more soap.
  • Use more water.

14. Iron has a mass no. of 56 and an atomic no. of 26. How much does a mole of iron atoms weigh?

  • 82 grams
  • 26 grams
  • 56 grams
  • 30 grams

15. 1 mole of any gas occupies how much space? (at room temp and pressure)

  • 24 m^3
  • 2.4 cm^3
  • 24 dm^3
  • 24 cm^3

16. Why do you fill a burette below eye level?

  • To stop acid splashing in your eye
  • You don't have to.
  • It is easier to measure
  • You cannot see the meniscus properly if it is above eye level

17. Which of the following is not a physical property of the transition metals?

  • Strong
  • Dense
  • They form coloured compounds
  • Shiny

18. What is the functional group of alcohols?

  • -COH-
  • -COOH
  • -OH
  • -COO-

19. The salts formed from carboxylic acids end in -anoate.

  • True
  • False

20. What two substances must you react to make an ester?

  • Water plus a carboxylic acid
  • Alcohol plus a transition metal
  • Alcohol plus a carboxylic acid
  • Any acid plus any alkali.