1. Explain the term ionic bond

Question 1 of 12

2. State the fomula for the two ions in vanadium (V) oxide

Question 2 of 12

3. In the dot and cross diagram of the outer electrons showing the covalent bonding in a molecule of nitrogen (N₂), how many electrons should be shown in areas 1, 2 and 3?

Question 3 of 12

4. Do ionic substances conduct electricity?

Question 4 of 12

5. Do larger molecules have higher or lower boiling points than smaller molecules?

Question 5 of 12

6. If a substance has a simple molecular structure, what physical state might it be at room temperature?

Question 6 of 12

7. Describe the formation of a covalent bond

Question 7 of 12

8. Describe the structure of an ionic compound, e.g NaCl

Question 8 of 12

9. Suggest why buckminsterfullerene, C₆₀, has a low melting point.

Question 9 of 12

10. Explain what is meant by electric current

Question 10 of 12

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

Question 11 of 12

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

Question 12 of 12