C1a C1b Revision questions

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AQA GCSE Chemistry C1a and C1b revision
C1a Revision
Unit 1 - Rocks and Building
1. Draw a labelled diagram to show the structure of an atom.
2. What is the difference between an element and a compound?
3. Which of the following are (a) molecules, (b) compounds? CO2 N2 H2O O2 CO
4. Give both the chemical name and the formula for limestone.
5. What are the two products made when limestone is heated?
6. What do we call a reaction in which a chemical breaks down when heated?
7. State three building materials made from limestone.
8. Write an equation for the reaction when water is added to quicklime.
9. What is added to limestone to make glass?
10. How is cement made?
Unit 2 - Rocks and Metals
1. Which part of Planet Earth contains metals?
2. Why are metals such as gold and silver found in their native state?
3. Why is the Reactivity Series useful if you want to extract a metal from its ore?
4. Which non-metal element is used to extract iron from its ore?
5. Hot air is piped into the blast furnace used in the extraction of iron; how is the air
6. What is an alloy? Give an example.
7. Iron from the blast furnace is brittle; which element makes it brittle?
8. What is special about smart memory alloys?
9. Name two alloys of copper.
10. Why is aluminium extracted by using electricity, even though it is an expensive
Unit3 - Crude Oil
1. Crude oil is a mixture of hydrocarbons. Which elements do hydrocarbons contain?
2. How are the different compounds in crude oil separated?
3. How does the length of a hydrocarbon chain affect (a) its boiling point? (b) its
4. What is the general formula of an alkane?
5. Write a word equation for the reaction when propane (C3H8) is burnt.
6. Explain why one of the products of this reaction causes an environmental problem.
7. Some hydrocarbons also contain sulphur; which gas is produced when sulphur burns?
8. Why is the production of this gas a problem?
9. How can this gas be removed from the waste gases in a power station?
10. What is global dimming and how does burning hydrocarbons contribute to it?
C1b Revision
Unit 4 - Products from Oil
1. Which process breaks large alkane molecules into smaller, more useful molecules?
2. How is the structure of alkenes different from alkanes?
3. What does the term "saturated hydrocarbon" mean?
4. Which chemical can be used to test for an alkene and what would you observe?
5. Alkenes are used to make polymers. What is this process called?
6. What do we call the small molecules from which polymers are made?
7. Write a chemical equation to show the formation of polyethene.
NWSG / Chemistry Dept / AU / May 09

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AQA GCSE Chemistry C1a and C1b revision
8. The atoms in a polymer chain are held together by strong bonds. What do we call the
weaker attractions between polymer chains?
9. What happens to a thermosoftening plastic when it is heated?
10. State two environmental factors which may change the properties of a smart
Unit 5 Plant Oils
1. State two methods used for extraction of plant oils.
2.…read more


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