1. State the names and molecular formulae of the first 5 alkanes

Question 1 of 22

2. Why does incomplete combustion occur?

Question 2 of 22

3. A student has been asked to draw all the alkene isomers of C₄H₈ and draws the following. Which of the following statements about the student's diagram is correct?

Question 3 of 22

4. Recall all the possible products of the incomplete combustion of alkanes

Question 4 of 22

5. Recall a use of kerosene

Question 5 of 22

6. Name this molecule

Question 6 of 22

7. A pupil has tried to write down various ways of representing butane using: molecular formula, displayed formula, general formula, empirical formula and stuctural formula. However she has missed one out. Which one?

Question 7 of 22

8. Explain the term homologous series

Question 8 of 22

9. What is crude oil?

Question 9 of 22

10. In the fractional distillation of crude oil, how does boiling point change as the chains get longer?

Question 10 of 22

11. What is the molecular formula for ethane?

Question 11 of 22

12. Explain how crude oil is separated into fractions

Question 12 of 22

13. Describe how nitrogen oxides and sulfur dioxide contribute to acid rain

Question 13 of 22

14. How does sulfur dioxide form in car engines?

Question 14 of 22

15. What do each of the following state symbols represent: (s), (l), (g), (aq)

Question 15 of 22

16. Why is carbon dioxide, CO₂ harmful to the environment?

Question 16 of 22

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

Question 17 of 22

18. Explain the term hydrocarbon

Question 18 of 22

19. What is a fuel?

Question 19 of 22

20. In car engines, sparks cause the formation of some gases which contribute to acid rain. What are these gases?

Question 20 of 22

21. Explain the term saturated

Question 21 of 22

22. Why is the melting point of a smaller molecule lower than that of a larger molecule?

Question 22 of 22


 

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