Drug Haul Bonding Revision Questions

Drug Haul Bonding Revision Questions

Bonding – Drug Haul Revision Questions

For questions 1 to 4 choose from the following answers

  1. Metallic
  2. Covalent molecular
  3. Covalent network
  4. Ionic

1. The type of bonding present in sodium

2. The type of bonding present in silicon

3. The type of bonding present in oxygen

4. The type of bonding never found in elements

5. What type of bonding / structure is present in an element which is bright and shiny. The element conducts electricity when solid and it has a high melting point.

6. What type of bonding / structure is present in an element which is solid at room temperature. The element does not conduct electricity when solid and it has a very high melting point.

7. What type of bonding / structure is present in an element which is a gas at room temperature. The element does not conduct electricity.

8. Which of the following molecules is not diatomic?

  1. CO
  2. HCl
  3. CO2
  4. N2

9. The bond found in hydrogen molecules H2, is

  1. formed by the sharing of electrons
  2. formed by the sharing of protons
  3. formed by the donation of electrons
  4. formed by the donation of protons

10. Which of the following substances is a molecule?

  1. Potassium chloride
  2. Carbon dioxide
  3. Magnesium fluoride
  4. Barium sulphide

11. Which of the following substances consists of ions where both ions have the same electron arrangement as neon?

  1. Sodium chloride
  2. Magnesium fluoride
  3. Potassium chloride
  4. Potassium fluoride

12. Which of the following pairs of atoms would bond by the sharing of electrons?

  1. Lithium and sulphur
  2. Magnesium and oxygen
  3. Sodium and chlorine
  4. Carbon and hydrogen

The following refers to questions 13 to 14

  1. Tetrahedral
  2. Pyramidal
  3. Bent
  4. Linear

13. What shape is a methane, CH4 molecule?

14.What shape is a hydrogen chloride HCl molecule?

15.Which of the following substances is most likely to be soluble in water?

  1. Potassium chloride
  2. Silicon dioxide
  3. Carbon tetrachloride
  4. Carbon monoxide

16. Which of the following substances is most likely to be soluble in petrol?

  1. Sodium chloride
  2. Lithium fluoride
  3. Potassium bromide
  4. Carbon tetrachloride

17.Which of the following substances would you expect to have the lowest melting point?

  1. Calcium oxide
  2. Carbon tetrachloride
  3. Sodium chloride
  4. Magnesium fluoride

18. Which of the following is not a diatomic molecule?

  1. CO
  2. H2
  3. H2O
  4. HCl

19. Which of the following is not made up of molecules?

  1. HF
  2. SO3
  3. NH3
  4. CaF2

20. Which of the following applies to covalent molecular substances?

Bond within molecule / Forces between molecules
A / strong / strong
B / strong / weak
C / weak / strong
D / weak / weak

21.

Which of the following statements about calcium fluoride, CaF2, is true?

  1. there is one calcium atom and two fluorine atoms in each molecule
  2. the structure contains calcium and fluorine atoms in the ratio 2:1
  3. there are twice as many negative fluoride ions as there are positive calcium ions
  4. there are twice as many positive calcium ions as there are negative fluoride ions

22. Which of the following substances is a conductor of electricity?

  1. Copper
  2. Sulphur
  3. Phosphorus
  4. Iodine

23. Which of the following substances is a conductor of electricity?

  1. Solid sodium chloride
  2. Paraffin wax
  3. Sucrose
  4. Molten lead (II) iodide

24. The reason ionic compounds only conduct when molten or when dissolved in water is

  1. when solid the ions can move but when the compound is dissolved in water or molten, the ions are not able to move
  2. when solid the ions can't move but when the compound is dissolved in water or molten, the ions are able to move
  3. when solid the electrons can't move but when the compound is dissolved in water or molten, the electrons are able to move
  4. when solid the molecules can't move but when the compound is dissolved in water or molten, the molecules are able to move

25. Which of the following substances is likely to be soluble in water?

  1. Carbon tetrachloride
  2. Hexane
  3. Cyclopentane
  4. Potassium bromide

26. When molten lead (II) iodide is electrolysed, the products are

  1. lead at the positive electrode and bromine at the negative electrode
  2. lead at the negative electrode and bromine at the positive electrode
  3. lead at the negative electrode and iodine at the positive electrode
  4. lead at the positive electrode and iodine at the negative electrode
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