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100+ Free MATSEC SEC Chemistry Practice Questions

Prepare for the Malta Secondary Education Certificate (SEC) Chemistry — SEC 06 (2026) exam with instant access — no signup required.

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2026 Statistics

Key Facts: MATSEC SEC Chemistry Exam

SEC 06

Official MATSEC subject code

MATSEC 2026 syllabi catalogue

30% + 70%

Paper I (SBA) + Paper II (controlled) weighting for school candidates

SEC Regulations / Assessment Code of Practice

Levels 1–3

Overall SEC attainment levels reported

SEC Regulations 2025

Grades 1–8

Paper II grade scale (1 highest)

SEC Regulations 2025

EUR 35

Late registration fee per subject (from 2026 sessions fee schedule)

MATSEC Examination Fees document

2 hours

Typical Paper II controlled written duration (most subjects)

SEC 06 2026 scheme of assessment

100

Free practice MCQs on this page (study adaptation)

OpenExamPrep

MATSEC SEC Chemistry (SEC 06) is a Malta MATSEC Secondary Education Certificate subject assessed mainly via Paper I SBA (30%) and Paper II controlled assessment (70%; typically 2 hours / 100 marks). Results report Levels 1–3 and Paper II grades 1–8. The 100 questions on this page are an English-language MCQ study adaptation of the 2026 syllabus, not an official MATSEC paper simulation.

Sample MATSEC SEC Chemistry Practice Questions

Try these sample questions to test your MATSEC SEC Chemistry exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1An atom of chlorine has atomic number 17 and mass number 35. How many protons, neutrons and electrons does a neutral chlorine atom contain?
A.17 protons, 18 neutrons, 17 electrons
B.17 protons, 35 neutrons, 17 electrons
C.35 protons, 17 neutrons, 18 electrons
D.18 protons, 17 neutrons, 17 electrons
Explanation: Atomic number equals the number of protons (17). In a neutral atom, electrons equal protons (17). Neutrons = mass number − atomic number = 35 − 17 = 18.
2Isotopes of the same element always have the same number of:
A.neutrons
B.protons
C.nucleons
D.mass numbers
Explanation: Isotopes are atoms of the same element with the same atomic number (same protons) but different numbers of neutrons, so mass numbers differ.
3Chlorine has two common isotopes: 75% chlorine-35 and 25% chlorine-37. What is the approximate relative atomic mass of chlorine?
A.36.0
B.35.0
C.35.5
D.37.0
Explanation: Ar = (75/100)×35 + (25/100)×37 = 26.25 + 9.25 = 35.5. Relative atomic mass is the weighted average of isotopic masses.
4What is the electron configuration of a magnesium atom (atomic number 12)?
A.2,8,8
B.2,10
C.2,8,1
D.2,8,2
Explanation: Magnesium has 12 electrons arranged in shells: 2 in the first, 8 in the second and 2 in the third (2,8,2), matching Group 2.
5Which statement best describes how a covalent bond forms between two non-metal atoms?
A.They share one or more pairs of outer-shell electrons
B.Electrons are completely transferred from one atom to the other
C.Metal cations are held in a sea of delocalised electrons
D.Opposite charges attract after ion formation
Explanation: Covalent bonding involves sharing of outer electrons so each atom can achieve a stable outer shell (often an octet).
6In a simple covalent molecule such as methane (CH4), why is the melting point low?
A.Covalent bonds within each molecule are very weak
B.Intermolecular forces between molecules are weak
C.Methane ions are free to move and break easily
D.Methane has a giant ionic lattice
Explanation: Simple molecular substances have strong covalent bonds within molecules but weak intermolecular forces between molecules, so little energy is needed to separate them.
7Which formula correctly represents magnesium chloride?
A.MgCl
B.Mg2Cl
C.MgCl2
D.Mg2Cl3
Explanation: Magnesium forms Mg2+ (Group 2) and chloride is Cl−. Two Cl− ions are needed to balance one Mg2+, giving MgCl2.
8Which property is typical of ionic compounds such as sodium chloride?
A.They have low melting points and boil easily at room pressure
B.They conduct electricity well in the solid state
C.They consist of discrete simple molecules that diffuse rapidly
D.They conduct electricity when molten or dissolved in water
Explanation: Ionic compounds conduct when molten or aqueous because ions are free to move. Solids do not conduct because ions are fixed in the lattice; melting points are high.
9Going down Group 1 (alkali metals), reactivity with water:
A.increases
B.decreases
C.stays the same
D.first increases then decreases
Explanation: Atomic radius increases down Group 1 and the outer electron is more easily lost, so reactivity with water increases from lithium to potassium and beyond.
10Chlorine water is added to potassium bromide solution and the mixture is shaken with an organic solvent. What is observed and why?
A.The organic layer becomes purple because iodine is displaced
B.The organic layer becomes orange-brown because bromine is displaced
C.No colour change because bromine is less reactive than chlorine
D.A white precipitate of silver bromide forms
Explanation: Chlorine is more reactive than bromine and displaces it from bromide: Cl2 + 2Br− → 2Cl− + Br2. Bromine colours the organic layer orange-brown.

About the MATSEC SEC Chemistry Exam

Malta Secondary Education Certificate (SEC) Chemistry — SEC 06 (2026) is administered by the MATSEC Examinations Board (University of Malta). Assessment follows the national SEC model: Paper I school-based assessment (30% for school candidates) and Paper II MATSEC-controlled assessment (70%), reporting overall Levels 1–3 and Paper II grades 1–8. Topic coverage follows the official 2026 subject foci in the SEC 06 syllabus. Paper language as indicated in the SEC 06 syllabus.

Assessment

School candidates: Paper I SBA (30%) + Paper II controlled written paper (70%; 100 marks; 2 hours). Private candidates: controlled Paper I + Paper II. Supplementary Session science restriction applies across Biology/Chemistry/Physics.

Time Limit

Paper II controlled written examination: 2 hours (100 marks).

Passing Score

Overall SEC Level 1, 2 or 3 from Paper I + Paper II cumulative performance; Paper II graded 1-8 (Grade 1 highest). Grade 5 is described as the minimum level acceptable for further studies in the subject (SEC Regulations 2025).

Exam Fee

The MATSEC Examination Fees schedule applicable from the 2026 sessions publishes no base registration fee per subject; only additional charges are listed — late registration EUR 35 per subject, very late registration EUR 70 per subject, Revision of Paper at SEC EUR 35, and change in school EUR 35. Examination fees are not refundable. (MATSEC Examinations Board, University of Malta)

MATSEC SEC Chemistry Exam Content Outline

Core

Atomic structure, bonding and the periodic table

Atomic structure, bonding and the periodic table

Core

Stoichiometry, formulae and equations

Stoichiometry, formulae and equations

Core

Acids, bases, salts and quantitative chemistry

Acids, bases, salts and quantitative chemistry

Core

Energy changes and rates of reaction

Energy changes and rates of reaction

Core

Electrochemistry and redox

Electrochemistry and redox

Core

Organic chemistry fundamentals

Organic chemistry fundamentals

Core

Earth resources, atmosphere and industrial chemistry

Earth resources, atmosphere and industrial chemistry

Core

Practical investigation and analysis

Practical investigation and analysis

How to Pass the MATSEC SEC Chemistry Exam

What You Need to Know

  • Passing score: Overall SEC Level 1, 2 or 3 from Paper I + Paper II cumulative performance; Paper II graded 1-8 (Grade 1 highest). Grade 5 is described as the minimum level acceptable for further studies in the subject (SEC Regulations 2025).
  • Assessment: School candidates: Paper I SBA (30%) + Paper II controlled written paper (70%; 100 marks; 2 hours). Private candidates: controlled Paper I + Paper II. Supplementary Session science restriction applies across Biology/Chemistry/Physics.
  • Time limit: Paper II controlled written examination: 2 hours (100 marks).
  • Exam fee: The MATSEC Examination Fees schedule applicable from the 2026 sessions publishes no base registration fee per subject; only additional charges are listed — late registration EUR 35 per subject, very late registration EUR 70 per subject, Revision of Paper at SEC EUR 35, and change in school EUR 35. Examination fees are not refundable.

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

MATSEC SEC Chemistry Study Tips from Top Performers

1Work from the official SEC 06 2026 syllabus learning outcomes and assessment criteria on um.edu.mt/matsec — examiners mark to those criteria.
2Practise timed Paper II-style structured answers (not only MCQ); school SBA evidence still counts 30% for school candidates.
3Choose the correct Paper II tier (Level 1–2 vs 2–3; Mathematics also offers 3–3*) with your teacher before registration closes.
4Use MATSEC past papers and marking schemes for personal study only; commercial reproduction requires MATSEC permission.
5For non-MCQ components (oral, practical, portfolio, coursework), schedule deliberate practice outside this bank.

Frequently Asked Questions

What is MATSEC SEC Chemistry?

Malta Secondary Education Certificate (SEC) Chemistry — SEC 06 (2026) is a Secondary Education Certificate subject administered by the MATSEC Examinations Board at the University of Malta under the 2026 learning-outcomes syllabus (SEC 06). It is taken mainly by Year 11 / Form V candidates (or private candidates aged 16+ by 31 December of the certification year).

How is MATSEC SEC Chemistry assessed?

School candidates: Paper I SBA (30%) + Paper II controlled written paper (70%; 100 marks; 2 hours). Private candidates: controlled Paper I + Paper II. Supplementary Session science restriction applies across Biology/Chemistry/Physics. Overall Levels 1–3 are reported from cumulative Paper I and Paper II performance; Paper II is graded 1–8.

Are there special registration rules for this subject?

Supplementary Session: only one of Biology, Chemistry or Physics if Level 3 not already held in any of those three (SEC Regulations 2025).

How much does MATSEC SEC registration cost?

The MATSEC Examination Fees schedule applicable from the 2026 sessions publishes no base registration fee per subject; only additional charges are listed — late registration EUR 35 per subject, very late registration EUR 70 per subject, Revision of Paper at SEC EUR 35, and change in school EUR 35. Examination fees are not refundable.

What is a good Paper II grade?

Overall SEC Level 1, 2 or 3 from Paper I + Paper II cumulative performance; Paper II graded 1-8 (Grade 1 highest). Grade 5 is described as the minimum level acceptable for further studies in the subject (SEC Regulations 2025).

Are these official MATSEC examination questions?

No. Official MATSEC SEC Chemistry uses written, oral, practical and/or school-based components as set in the SEC 06 syllabus—not a fixed multiple-choice paper. This bank is an original English-language MCQ study adaptation for syllabus knowledge and decision practice only.