1. State two properties of aluminium that make it suitable for use in food cans

Question 1 of 20

2. Do ionic substances conduct electricity?

Question 2 of 20

3. Explain the term ionic bond

Question 3 of 20

4. Alloys contain different sized positive ions. What properties does this give alloys compared to pure metals?

Question 4 of 20

5. A substance is found not to conduct electricity even when molten. What type of bonding does the substance have?

Question 5 of 20

6. In the dot and cross diagram of the outer electrons showing the covalent bonding in a molecule of ethane (C₂H₆), how many electrons should be shown in areas 1, 2, 3, 4, 5, 6 and 7?

Question 6 of 20

7. Explain whether solid ionic compounds conduct electricity

Question 7 of 20

8. Describe the bonding in a metal

Question 8 of 20

9. Describe the formation of a covalent bond

Question 9 of 20

10. Why do covalent compounds (e.g H₂O) not conduct electricity?

Question 10 of 20

11. Explain how the atoms are held together in a hydrogen bromide molecule

Question 11 of 20

12. Explain why magnesium oxide has a higher melting point than sodium chloride.

Question 12 of 20

13. What is a mixture of metals called?

Question 13 of 20

14. Explain, in terms of its structure, why graphite can conduct electricity.

Question 14 of 20

15. What does the word malleable mean?

Question 15 of 20

16. What is needed to complete this diagram to show the ionic bonding in magnesium chloride, MgCl₂ ?

Question 16 of 20

17. Why is the boiling point of a larger molecule higher than that of a smaller molecule?

Question 17 of 20

18. Explain why nitrogen gas, N₂, is a gas at room temperature

Question 18 of 20

19. Explain why Silica, SiO₂ is a solid with a high melting point

Question 19 of 20

20. A student has drawn a diagram to show the structure of a metallic solid, but forgotten to label the parts. Which of the following correctly lists those parts?

Question 20 of 20