Pearson Edexcel International GCSE in Chemistry · 4CH1 · Free · no account needed
Naming, Drawing And Classifying — exam questions
12 original Incandio exam-style questions on Naming, Drawing And Classifying, 26 marks, about 26 minutes of writing. Each one carries the command word, the tariff and the specification statement it assesses, exactly as a paper presents them. This is an original Incandio practice question, written to reflect the structure and demands of the qualification. It is not an official Pearson Edexcel past-paper question.
This is the practice set for Naming, Drawing And Classifying — the lesson that teaches it. Read the lesson first if the idea is new; come here when you want to find out whether you can turn it into marks. Completely free, no account needed to read.
What these questions ask of you
7 command words run through this set, and on Pearson Edexcel International GCSE Chemistry each one means something precise. Answering the wrong command is the commonest way a candidate who understands the lesson still loses the mark.
- Which (1 mark)
- one option chosen from the set given
- Name (1 mark)
- the correct chemical name
- Give (1–2 marks)
- a short factual answer — the most common chemistry command
- Describe (2–5 marks)
- developed, linked statements of what happens or what is observed Misread as: giving one bare observation where the tariff asked for a developed account
- Explain (2–4 marks)
- the reason, in terms of particles, bonding, energy or equilibrium Misread as: describing the observation without giving the chemistry that causes it
- Suggest (1–3 marks)
- a plausible answer applying taught chemistry to an unfamiliar substance
- Identify (1–2 marks)
- the correct substance or feature selected from what is given
Assessed on Paper 1 (4CH1/1C) and Paper 2 (4CH1/2C), against AO1, AO2, AO3.
Where these sit in the specification
Pearson Edexcel International GCSE Chemistry (4CH1) — statements 4.4 · 4.6 · 4.5. Incandio is aligned to this specification; it is not published by, endorsed by or affiliated with Pearson, and it reproduces none of Pearson's wording.
The 12 questions
Answer them on paper, then open the lesson's exam practice to have them marked. The mark scheme, the accepted and rejected answers and the annotated model answer are in Incandio and are not printed here — an answer beside its question is not practice.
-
Table 1 — three reactions of organic compounds Reaction reaction 1 C₂H₄ + Br₂ → C₂H₄Br₂ reaction 2 CH₄ + Cl₂ → CH₃Cl + HCl reaction 3 C₃H₈ + 5O₂ → 3CO₂ + 4H₂O Stems — 1 carbon meth-, 2 eth-, 3 prop-, 4 but-, 5 pent-, 6 hex-. Endings: alkane -ane, alkene -ene, alcohol -ol, carboxylic acid -oic acid.
(a)
(1)Identify
Identify the type of reaction shown by reaction 3 in Table 1.
Table 1 — three reactions of organic compounds Reaction reaction 1 C₂H₄ + Br₂ → C₂H₄Br₂ reaction 2 CH₄ + Cl₂ → CH₃Cl + HCl reaction 3 C₃H₈ + 5O₂ → 3CO₂ + 4H₂O Stems — 1 carbon meth-, 2 eth-, 3 prop-, 4 but-, 5 pent-, 6 hex-. Endings: alkane -ane, alkene -ene, alcohol -ol, carboxylic acid -oic acid.
(b)
(2)Give
Give the type of reaction shown by reactions 1 and 2 in Table 1.
Table 1 — three reactions of organic compounds Reaction reaction 1 C₂H₄ + Br₂ → C₂H₄Br₂ reaction 2 CH₄ + Cl₂ → CH₃Cl + HCl reaction 3 C₃H₈ + 5O₂ → 3CO₂ + 4H₂O Stems — 1 carbon meth-, 2 eth-, 3 prop-, 4 but-, 5 pent-, 6 hex-. Endings: alkane -ane, alkene -ene, alcohol -ol, carboxylic acid -oic acid.
(c)
(3)Explain
Explain how the equations for reactions 1 and 2 in Table 1 support those answers.
Table 1 — three reactions of organic compounds Reaction reaction 1 C₂H₄ + Br₂ → C₂H₄Br₂ reaction 2 CH₄ + Cl₂ → CH₃Cl + HCl reaction 3 C₃H₈ + 5O₂ → 3CO₂ + 4H₂O Stems — 1 carbon meth-, 2 eth-, 3 prop-, 4 but-, 5 pent-, 6 hex-. Endings: alkane -ane, alkene -ene, alcohol -ol, carboxylic acid -oic acid.
(d)
(3)Suggest
Reaction 2 in Table 1 can also give CH₂Cl₂ and further products. Suggest why, and why the equation as written shows only the first of them.
Table 1 — three reactions of organic compounds Reaction reaction 1 C₂H₄ + Br₂ → C₂H₄Br₂ reaction 2 CH₄ + Cl₂ → CH₃Cl + HCl reaction 3 C₃H₈ + 5O₂ → 3CO₂ + 4H₂O Stems — 1 carbon meth-, 2 eth-, 3 prop-, 4 but-, 5 pent-, 6 hex-. Endings: alkane -ane, alkene -ene, alcohol -ol, carboxylic acid -oic acid.
(Total for Question 1 = 9 marks)
-
(1)Which
Which name belongs to an alkane with five carbon atoms?
Name A pentene B pentane C butane D pentanol (Total for Question 2 = 1 mark)
-
(1)Name
Name the alkene with three carbon atoms.
Stems — 1 carbon meth-, 2 eth-, 3 prop-, 4 but-, 5 pent-, 6 hex-. Endings: alkane -ane, alkene -ene, alcohol -ol, carboxylic acid -oic acid.
(Total for Question 3 = 1 mark)
-
(1)Give
Give the type of reaction in which two molecules join to form a single product.
(Total for Question 4 = 1 mark)
-
(2)Describe
Describe the difference between a structural formula and a displayed formula.
(Total for Question 5 = 2 marks)
-
(2)Give
Give the structural formulae of the two isomers with the molecular formula C₄H₁₀.
(Total for Question 6 = 2 marks)
-
(3)Explain
Explain how you can tell a substitution reaction from an addition reaction by looking at the equation.
(Total for Question 7 = 3 marks)
-
(3)Suggest
A student draws four displayed formulae for C₅H₁₂ and claims all four are different isomers. Suggest why she is likely to be wrong.
(Total for Question 8 = 3 marks)
-
(4)Explain
Explain how the name of an organic compound tells you the length of its carbon chain and the family it belongs to.
(Total for Question 9 = 4 marks)
Have them marked, then defend the answer
Practice tells you the mark; teaching it back tells you whether you understand it. On Incandio a topic counts as mastered only once you have taught it and defended it.
- Mark these questions — 12 questions, marked on Incandio against the authored scheme, with the mistake you actually made named.
- Teach it — explain Naming, Drawing And Classifying to Ember, an AI pupil who does not have it yet and asks the awkward question.
- Defend it — argue it against August Kekulé over three rounds, marked against descriptors you can read first.
Completely free. No subscriptions, no paywalls, no account needed to start.
Back to the lesson
- Naming, Drawing And Classifying — A name that tells you the structure, a method that finds every isomer, and three words that cover every organic reaction here.
- All of Incandio Chemistry · Incandio Exam Practice