Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Coding for the type of compound
19 practice questions
Practice questions
1–10 of 19
Question 1
1 mark · Easy
Answer and see the solution →State the meaning of the code letters 'eth' in the name of an organic compound.
Question 2
3 marks · Easy
Answer and see the solution →(a)[1 mark]State the definition of an alkane.
(b)[1 mark]Give the code letters that indicate a chain of five carbon atoms in the name of an organic compound.
(c)[1 mark]Write the ending used in the name of an alkene.
Question 3
2 marks · Easy
Answer and see the solution →A certain alkane has the name 'pentane'. Calculate the total number of hydrogen atoms in one molecule of pentane.
Question 4
2 marks · Easy
Answer and see the solution →Explain how you can tell from its name that but-2-ene belongs to the alkene family and not the alkane family.
Question 5
3 marks · Easy
Answer and see the solution →The table shows the names and formulas of some organic compounds.
Table: Names and formulas of organic compounds. Name Formula methane CH4 ethene C2H4 propane C3H8 butene C4H8 (a)[1 mark]Which compound in the table contains a carbon–carbon double bond?
(b)[1 mark]State the code letters that indicate a three-carbon chain in an organic compound.
(c)[1 mark]Give the homologous series to which 'butene' belongs.
Question 6
1 mark · Easy
Answer and see the solution →State the general rule for numbering the carbon atoms in a chain when naming an alkene.
Question 7
3 marks · Easy
Answer and see the solution →(a)[1 mark]State the number of carbon atoms in a molecule named 'butane'.
(b)[1 mark]Write the name of the homologous series that 'butane' belongs to.
(c)[1 mark]Give the ending that shows a compound contains a carbon–carbon double bond.
Question 8
2 marks · Easy
Answer and see the solution →A molecule of hexene contains six carbon atoms. Use the general formula for alkenes to calculate the number of hydrogen atoms in one molecule of hexene.
Question 9
2 marks · Normal
Answer and see the solution →State the number of carbon atoms in a molecule with the code letters 'prop' in its name and give the name of the corresponding alkane.
Question 10
4 marks · Normal
Answer and see the solution →(a)[1 mark]Define organic chemistry.
(b)[1 mark]Give the general formula for alkanes.
(c)[1 mark]State the characteristic feature that distinguishes alkenes from alkanes.
(d)[1 mark]Name the class of compounds with only carbon and hydrogen atoms joined by single covalent bonds.