Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Displayed formulae
19 practice questions
Practice questions
1–8 of 8 · Normal
Question 1
2 marks · Normal
Answer and see the solution →Draw the displayed formula for ethene (C2H4).
Question 2
4 marks · Normal
Answer and see the solution →The displayed formula of a molecule is shown below:
(a)[1 mark]State the total number of carbon, hydrogen and oxygen atoms present in the molecule.
(b)[1 mark]Identify the functional group present in this molecule.
(c)[1 mark]Describe the connectivity of the oxygen atom in this molecule.
(d)[1 mark]State the types of bonds present between the carbon atoms and the oxygen atom in this displayed formula.
Question 3
3 marks · Normal
Answer and see the solution →Methanol is a simple alcohol. Using your knowledge of typical bonding, calculate the total number of bonds present in a molecule of methanol ().
Question 4
3 marks · Normal
Answer and see the solution →Explain why alkanes with four or fewer carbon atoms can be represented with straight-chain displayed formulae, and why each carbon has four bonds.
Question 5
4 marks · Normal
Answer and see the solution →Displayed formulae and properties of small alkenes Molecule Displayed formula Ethene C = C with each C joined to 2 H Propene C = C - C with hydrogens to fill remaining bonds Butene C = C - C - C with hydrogens to fill remaining bonds Use the displayed formulae in the table to answer the questions.
(a)[1 mark]Identify the type of bond connecting the first two carbon atoms in all molecules.
(b)[2 marks]State the total number of single and double bonds in propene.
(c)[1 mark]Describe how the displayed formula helps you determine the locations of hydrogen atoms in butene.
Question 6
1 mark · Normal
Answer and check →In displayed formulae, what is the usual number of bonds formed by an oxygen atom?
- A.1
- B.2
- C.3
- D.4
Question 7
2 marks · Normal
Answer and see the solution →Draw the displayed formula for butanol ().
Question 8
4 marks · Normal
Answer and see the solution →The displayed formula below represents a simple alkene:
(a)[1 mark]Identify the name of this alkene.
(b)[2 marks]Explain how you used the displayed formula to identify the molecule.
(c)[1 mark]State the total number of hydrogen atoms in this molecule.