Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Chapter
Introduction to Organic Chemistry
185 practice questions
Topics covered
- Types of formula for organic molecules19 practice questions
- General formulae18 practice questions
- Displayed formulae19 practice questions
- Naming organic compounds19 practice questions
- Coding for the type of compound19 practice questions
- Coding for branched chains19 practice questions
- Structural isomerism in the alkanes19 practice questions
- A quick introductory look at the alcohols20 practice questions
- Some chemical reactions of organic compounds21 practice questions
Practice questions
21–30 of 80 · Normal
Question 21
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 22
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 23
2 marks · Normal
Answer and see the solution →Draw the displayed formula for butanol ().
Question 24
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.
Question 25
2 marks · Normal
Answer and see the solution →State the IUPAC name for the organic compound with the following structural formula:
Question 26
4 marks · Normal
Answer and see the solution →(a)[1 mark]The displayed formula of a hydrocarbon is shown below:
i) State the number of carbon atoms in the molecule.
(b)[1 mark]ii) State the general formula for alkanes.
(c)[2 marks]iii) Name the compound shown.
Question 27
3 marks · Normal
Answer and see the solution →Explain how the name '2-butene' describes the structure of the molecule, according to IUPAC rules.
Question 28
4 marks · Normal
Answer and see the solution →The table below shows the formulas of three different organic compounds.
Compound Structural formula A CH3CH2CH2CH3 B CH2=CHCH3 C CH3CH2CH2OH For each compound:
(a)[1 mark]i) State the homologous series to which it belongs.
(b)[3 marks]ii) State the IUPAC name for each compound.
Question 29
1 mark · Normal
Answer and check →Which of the following is the correct IUPAC name for the compound with the formula CH3CH2CH2CH=CH2?
- A.pentene
- B.1-pentene
- C.2-pentene
- D.pentane
Question 30
2 marks · Normal
Answer and see the solution →Write the IUPAC name for the following compound: