100+ Free National 5 Chemistry Practice Questions
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An alpha particle is identical to:
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Key Facts: National 5 Chemistry Exam
A-D
Grading scale
Qualifications Scotland
100 + 20
Marks (paper + assignment)
SQA course specification
2h 30
Question paper duration
Qualifications Scotland
100
Free practice questions here
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Qualifications Scotland National 5 Chemistry (course code C813 75) is graded A-D and assessed by a 2h30 question paper (100 marks: 25 multiple-choice + 75 extended-response) plus a 20-mark assignment. The 2026 specification continues to focus on rates, bonding, hydrocarbons, redox, and chemical analysis.
Sample National 5 Chemistry Practice Questions
Try these sample questions to test your National 5 Chemistry exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1Collision theory states that for a reaction to occur, particles must collide with sufficient energy and the correct orientation. Which factor does NOT increase the rate of a chemical reaction?
2A reaction produces 48 cm^3 of gas in 60 seconds. What is the average rate of reaction in cm^3/s?
3Which of the following best explains why powdered marble reacts faster with dilute hydrochloric acid than marble chips?
4A catalyst increases the rate of a reaction by:
5In a reaction, 0.24 g of magnesium fully reacted in 30 s. What is the average rate in g/s?
6Which subatomic particle has a relative mass of 1 and no charge?
7An atom has atomic number 17 and mass number 35. How many neutrons does it contain?
8Isotopes of an element have:
9Chlorine consists of 75% Cl-35 and 25% Cl-37. What is its relative atomic mass (to 1 decimal place)?
10What is the electron arrangement of a chlorine atom (Z = 17)?
About the National 5 Chemistry Exam
National 5 Chemistry is a Scottish Credit and Qualifications Framework (SCQF) Level 5 course delivered by Qualifications Scotland (formerly SQA). It covers three areas — Chemical Changes and Structure, Nature's Chemistry, and Chemistry in Society — assessed through a 100-mark question paper and a 20-mark assignment.
Questions
100 scored questions
Time Limit
Question paper 2 hours 30 minutes; Assignment 1 hour 30 minutes
Passing Score
Grade C is the minimum pass (A, B, C); D awarded for near-pass
Exam Fee
Entry fees set by school/centre (typically around £12-£15 per subject) (Qualifications Scotland (formerly SQA))
National 5 Chemistry Exam Content Outline
Rates of Reaction and Atomic Structure
Collision theory, factors affecting rate (concentration, temperature, particle size, catalysts), average rate calculation, subatomic particles, atomic and mass number, isotopes, relative atomic mass, electron arrangement
Periodic Table, Bonding and Formulae
Groups 1, 7, 0 and transition metals, reactivity trends, ionic and covalent bonding, metallic bonding, bond polarity, writing chemical formulae and balanced equations with state symbols
Mole Calculations and Concentration
Formula mass, n = m/Mr, concentration in mol/L, conservation of mass, calculations from balanced equations
Fuels, Hydrocarbons and Polymers
Fossil fuels, complete and incomplete combustion, greenhouse effect, biofuels, hydrogen fuel cells, alkanes/alkenes/cycloalkanes, isomers, addition reactions, addition polymerisation, cracking
Everyday Consumer Products
Alcohols and carboxylic acids, esters and esterification, fats and oils, soaps and emulsions, proteins and amino acids, carbohydrates, fertilisers and the Haber process
Metals, Redox and Electrochemistry
Metallic bonding, alloys, electrochemical series and cells, OIL RIG, half-equations, oxidising and reducing agents, metal extraction (electrolysis vs reduction with carbon), rusting
Plastics, Nuclear Chemistry and Chemical Analysis
Thermoplastic vs thermosetting plastics, addition vs condensation polymers, alpha/beta/gamma radiation, half-life, nuclear equations, flame tests, precipitation tests for halides, calorimetry q = cmΔT, titration calculations
How to Pass the National 5 Chemistry Exam
What You Need to Know
- Passing score: Grade C is the minimum pass (A, B, C); D awarded for near-pass
- Exam length: 100 questions
- Time limit: Question paper 2 hours 30 minutes; Assignment 1 hour 30 minutes
- Exam fee: Entry fees set by school/centre (typically around £12-£15 per subject)
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
National 5 Chemistry Study Tips from Top Performers
Frequently Asked Questions
What awarding body runs National 5 Chemistry?
National 5 Chemistry is delivered by Qualifications Scotland (formerly SQA). The course code is C813 75 and it sits at SCQF Level 5 within the Scottish qualifications framework.
How is National 5 Chemistry assessed?
Assessment is a 100-mark question paper (Section 1: 25 marks multiple-choice; Section 2: 75 marks extended-response) lasting 2 hours 30 minutes, plus a 20-mark assignment written up under supervised conditions.
What grades are awarded for National 5 Chemistry?
Grades A, B, C and D are awarded, with C as the minimum pass and D as a near-pass. The grade is calculated from the combined question paper and assignment mark out of 120.
When are National 5 Chemistry exams sat?
The question paper is normally sat in the May diet of the SQA exam timetable in S4. The assignment is completed earlier in the school year and submitted to Qualifications Scotland for external marking.