Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Displayed formulae
19 practice questions
Practice questions
1–10 of 19
Question 1
1 mark · Easy
Answer and see the solution →State the usual number of bonds formed by a chlorine atom in a displayed formula.
Question 2
3 marks · Easy
Answer and see the solution →Draw the displayed formula for propene (\ce{C3H6}\)).
Question 3
2 marks · Easy
Answer and see the solution →An alkane molecule contains 3 carbon atoms. Calculate the total number of hydrogen atoms in its displayed formula.
Question 4
2 marks · Easy
Answer and see the solution →Explain why oxygen forms two bonds in the displayed formula of ethanol.
Question 5
3 marks · Easy
Answer and see the solution →Table 1 shows the molecular formulae of some simple alcohols. Table 1
Alcohol Molecular Formula Methanol CH3OH Ethanol C2H5OH Propanol C3H7OH (a)[1 mark]Name the functional group present in these alcohols.
(b)[1 mark]State the number of carbon atoms in a molecule of propanol.
(c)[1 mark]Draw the displayed formula for methanol.
Question 6
1 mark · Easy
Answer and see the solution →In the displayed formula below, what type of bond is shown between the two carbon atoms? C—C
Question 7
3 marks · Easy
Answer and see the solution →Answer the following about the typical bonding in displayed formulae.
(a)[1 mark]State the typical number of bonds formed by a hydrogen atom.
(b)[1 mark]State the typical number of bonds formed by a carbon atom.
(c)[1 mark]State the typical number of bonds formed by an oxygen atom.
Question 8
2 marks · Easy
Answer and see the solution →How many total bonds (lines) should be drawn in the displayed formula of ethane (\ce{C2H6}\))?
Question 9
2 marks · Normal
Answer and see the solution →Draw the displayed formula for ethene (C2H4).
Question 10
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.