100+ Free ECZ Chemistry 5070 Practice Questions

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2026 Statistics

Key Facts: ECZ Chemistry 5070 Exam

5070

ECZ Chemistry subject code (Papers 5070/1 and 5070/2)

2026 ECZ School Certificate Examination Time-Table

1 h + 2 h

Official written times for Chemistry 1 and Chemistry 2

2026 ECZ School Certificate Examination Time-Table

1–9

ECZ subject grade scale (1 highest, 9 fail)

Examinations Council of Zambia grading practice

K0 / K600 / K200

2026 fees: public/grant-aided SC free; private SC per candidate; GCE per subject

2026 ECZ fee guidance used for SC/GCE registration

Calculators

Non-programmable calculators permitted for Chemistry

2026 ECZ School Certificate Examination Time-Table notes

CDC 2024

Ministry of Education Ordinary Level Chemistry syllabus (Forms 1–4)

edu.gov.zm Chemistry Syllabus PDF

ECZ Chemistry 5070 is Zambia’s O-Level chemistry subject: Paper 1 (1 hour, objective) and Paper 2 (2 hours), plus school-based practical, graded 1–9. Calculators are allowed. Public/grant-aided SC entry is free; private SC is K600 per candidate and GCE is K200 per subject in 2026. This page is a 100-item English MCQ study adaptation, not an official paper.

Sample ECZ Chemistry 5070 Practice Questions

Try these sample questions to test your ECZ Chemistry 5070 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A learner needs to smell a gas produced in a test tube. Which procedure is the safest laboratory practice?

A.Waft a little of the gas towards the nose with a hand

B.Inhale deeply from the test tube immediately after the reaction starts

C.Pour the contents onto the bench and smell the spill

D.Place the nose directly over the mouth of the test tube

Explanation: Laboratory gases may be toxic or corrosive. The approved method is to waft a small amount of vapour towards the nose rather than inhaling directly. Direct sniffing, deep inhalation, or smelling a spill can cause injury.

2Which statement correctly compares particles in a solid with particles in a gas at the same temperature?

A.Solid particles vibrate about fixed positions; gas particles are far apart and move randomly

B.Both solids and gases have particles that slide over one another in contact

C.Gas particles have no kinetic energy; solid particles have the highest kinetic energy

D.Solid particles are far apart and move randomly; gas particles vibrate about fixed positions

Explanation: Kinetic theory describes solids as closely packed particles vibrating about fixed positions. In a gas the particles are widely spaced and move rapidly and randomly. That difference explains the fixed shape of a solid and the compressibility of a gas.

3Brownian motion of smoke particles in air is evidence that

A.smoke particles are being bombarded by randomly moving air molecules

B.smoke particles decay radioactively and emit visible sparks

C.air is a compound with a fixed formula rather than a mixture

D.air molecules are stationary between collisions with the walls of the container

Explanation: Pollen or smoke specks are large enough to see but small enough to be knocked about by invisible air molecules. Their jerky random path is direct evidence for the kinetic theory of matter.

4Which technique is most suitable for separating an insoluble solid from a liquid, such as sand from water?

A.Filtration

B.Fractional distillation

C.Paper chromatography

D.Simple distillation

Explanation: Filtration uses a porous barrier (filter paper) to retain an insoluble solid while the liquid (filtrate) passes through. Distillation separates liquids by boiling point and chromatography separates dissolved substances.

5In the Ministry of Education Ordinary Level Chemistry syllabus, an element is best described as a substance that

A.consists of only one type of atom

B.can be separated into simpler substances by filtration

C.always exists as diatomic molecules at room temperature

D.contains two or more types of atom chemically combined in a fixed ratio

Explanation: An element is a substance made of only one type of atom (same proton number). Compounds contain two or more elements chemically combined; mixtures can be separated by physical methods. Many elements are monatomic or giant structures, not diatomic.

6On a heating curve of a pure solid, the temperature stays constant while the solid melts. Why does the temperature not rise during this stage?

A.Energy is used to overcome forces between particles rather than to increase their average kinetic energy

B.Melting is exothermic, so heat is released to the surroundings

C.The particles stop moving completely at the melting point

D.The thermometer is faulty whenever a change of state occurs

Explanation: During melting, supplied energy increases the potential energy of particles by weakening attractions, so the average kinetic energy — and therefore the temperature — stays constant until the solid has become liquid.

7A sample of a solid melts over a wide temperature range rather than at one sharp melting point. The most likely explanation is that the sample is

A.impure

B.a giant covalent structure with a very high melting point

C.already a gas at that temperature

D.a pure element

Explanation: A pure substance has a sharp melting point. Impurities disrupt the lattice and typically lower and broaden the melting range. Melting-point behaviour is a standard criterion of purity in the Form 1 syllabus.

8Which subatomic particle has a relative charge of −1 and a relative mass that is treated as negligible at Ordinary Level?

A.Proton

B.Neutron

C.Electron

D.Alpha particle

Explanation: Electrons have relative charge −1 and a relative mass of about 1/1836 of a proton, taken as negligible in O-Level calculations. Protons are +1 with relative mass 1; neutrons are uncharged with relative mass 1.

9A sodium atom is written as ²³Na and has atomic number 11. How many neutrons are in the nucleus?

A.12

B.23

C.34

D.11

Explanation: Neutron number = nucleon (mass) number − atomic (proton) number = 23 − 11 = 12. The atomic number 11 is the proton count, not the neutron count.

10Isotopes of the same element have

A.the same number of protons but different numbers of neutrons

B.the same number of neutrons but different numbers of protons

C.different numbers of electrons in a neutral atom and therefore different chemical symbols

D.the same mass number but different atomic numbers

Explanation: Isotopes are atoms of the same element: same proton number, different neutron numbers and therefore different mass numbers. Chemical behaviour is almost the same because the electron arrangement is the same.

About the ECZ Chemistry 5070 Exam

Zambia School Certificate / GCE Chemistry (5070) is the Ordinary Level chemistry subject administered by the Examinations Council of Zambia. The official 2026 School Certificate papers are 5070/1 Chemistry 1 (objective, 1 hour) and 5070/2 Chemistry 2 (2 hours); school-based practical work is part of the assessment, and non-programmable calculators are permitted. Content follows the Ministry of Education Chemistry syllabus (CDC, 2024) for Forms 1–4: matter and atomic structure, bonding, acids/bases/salts, mole calculations, electrolysis, metals, organic chemistry, qualitative analysis, and air, water and the environment. Results are reported on the ECZ 1–9 scale. This page provides 100 free English-language multiple-choice study items with worked calculations. They are a study adaptation, not official ECZ items and not a substitute for Paper 2 written practice or the school-based practical.

Assessment

Written papers 5070/1 (objective, 1 hour) and 5070/2 (2 hours), plus school-based practical assessment as directed by ECZ. Non-programmable calculators are permitted for Chemistry. On the 2026 School Certificate timetable both written papers are on Monday 9 November 2026 (5070/2 at 08:00; 5070/1 at 11:30).

Time Limit

5070/1 Chemistry 1: 1 hour; 5070/2 Chemistry 2: 2 hours

Passing Score

ECZ grades Chemistry on the 1–9 scale (1 = highest distinction; 9 = fail/ungraded). Universities typically look for credits (often Grade 6 or better) in science subjects; confirm current award and admissions rules with ECZ and the institution.

Exam Fee

Public and grant-aided SC candidates: free. Private SC: K600 per candidate (2026). GCE: K200 per subject (2026). (Examinations Council of Zambia (ECZ))

ECZ Chemistry 5070 Exam Content Outline

15%

Matter, Atomic Structure and the Periodic Table

Kinetic theory, mixtures, atomic structure, isotopes, electron arrangement, groups, periods and periodic trends.

12%

Bonding, Structure and Chemical Reactions

Ionic, covalent and metallic bonding; giant versus simple structures; formulae and balanced equations.

14%

Stoichiometry and the Mole Concept

Moles, gas volume at r.t.p., concentration, empirical formulae, limiting reagent, yield and titration calculations.

12%

Acids, Bases, Salts and Redox

Acid–base reactions, salt preparation, oxidation numbers and tests for oxidising and reducing agents.

13%

Electrochemistry, Rates, Energy and Equilibrium

Electrode products, Faraday’s laws, collision theory, enthalpy and chemical equilibrium.

18%

Metals, Non-metals, Organic and Environment

Extraction and alloys, hydrogen and oxygen, hydrocarbons and functional-group chemistry, air, water and climate.

16%

Experimental Chemistry and Qualitative Analysis

Apparatus, purity, separation techniques, gas tests and identification of ions.

How to Pass the ECZ Chemistry 5070 Exam

What You Need to Know

Passing score: ECZ grades Chemistry on the 1–9 scale (1 = highest distinction; 9 = fail/ungraded). Universities typically look for credits (often Grade 6 or better) in science subjects; confirm current award and admissions rules with ECZ and the institution.
Assessment: Written papers 5070/1 (objective, 1 hour) and 5070/2 (2 hours), plus school-based practical assessment as directed by ECZ. Non-programmable calculators are permitted for Chemistry. On the 2026 School Certificate timetable both written papers are on Monday 9 November 2026 (5070/2 at 08:00; 5070/1 at 11:30).
Time limit: 5070/1 Chemistry 1: 1 hour; 5070/2 Chemistry 2: 2 hours
Exam fee: Public and grant-aided SC candidates: free. Private SC: K600 per candidate (2026). GCE: K200 per subject (2026).

Keys to Passing

Work through all 100 available questions
Review every answer and explanation
Track weak areas and revisit them
Use our AI tutor for tough concepts

ECZ Chemistry 5070 Study Tips from Top Performers

1Practise mole calculations every session: mass ↔ mole, 24 dm³ mol⁻¹ at r.t.p., mol/dm³, empirical formulae and percentage yield, showing each step.

2Memorise standard gas and ion tests (H₂, O₂, CO₂, NH₃, Cl₂; flame colours; NaOH precipitates; AgNO₃ and BaCl₂ anion tests) for both Paper 1 and the practical.

3Learn electrode products for molten salts, dilute H₂SO₄, concentrated HCl, CuSO₄ and brine, then apply Faraday’s laws for quantity questions.

4Use IUPAC names for alkanes, alkenes, alcohols, carboxylic acids and esters, and the bromine-water test for unsaturation.

5Treat this MCQ bank as knowledge and calculation practice; still work official-style Paper 2 structured questions and school practical skills under timed conditions.

Frequently Asked Questions

What is ECZ Chemistry 5070?

Chemistry (5070) is the Zambia School Certificate / GCE Ordinary Level chemistry subject set by the Examinations Council of Zambia. It is examined through written papers 5070/1 and 5070/2 plus school-based practical assessment, and is graded on the ECZ 1–9 scale.

What is the official paper structure and timing?

The 2026 School Certificate timetable lists 5070/2 Chemistry 2 (2 hours) and 5070/1 Chemistry 1 (1 hour, objective). Both written papers are scheduled on Monday 9 November 2026. Official assessment also includes school-based practical work. ECZ does not publish a single official item count for the subject.

Are these practice questions official ECZ items?

No. The 100 questions on this page are an original English-language multiple-choice study adaptation. They are not leaked papers, not an official translation, and not a simulation of Paper 2 structured writing or the school-based practical.

Are calculators allowed in Chemistry 5070?

Yes. The official 2026 School Certificate timetable notes permit non-programmable electronic calculators for Chemistry (5070). Pocket computers and unauthorised materials are forbidden.

How is Chemistry 5070 graded?

ECZ reports each subject on a 1–9 scale: Grade 1 is the highest distinction and Grade 9 is fail/ungraded. Most Zambian universities look for credits (commonly Grade 6 or better) in relevant subjects including sciences; confirm the current certificate rules with ECZ and the receiving institution.

What are the 2026 examination fees?

Under free education, candidates in public and grant-aided schools do not pay ECZ examination fees. Private School Certificate candidates pay K600 per candidate in 2026. GCE candidates pay K200 per subject in 2026.

What syllabus should I study?

Study the Ministry of Education Chemistry syllabus for Ordinary Level Forms 1–4 (Curriculum Development Centre, 2024). It covers matter and atomic structure, bonding, acids/bases/salts, kinetics, redox, the mole, thermochemistry, equilibrium, electrochemistry, periodicity, metallurgy, non-metals, organic chemistry and environmental chemistry.

100+ Free ECZ Chemistry 5070 Practice Questions

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