Grade 9 Chemistry Questions and Answers
A free sample of Grade 9 Chemistry practice questions with the correct answer and an explanation, following the Lebanese curriculum. Useful for revision before school tests and the Brevet.
أسئلة الكيمياء للصف 9 مع الأجوبة والشرح وفق المنهج اللبناني.
How to use this page: read each question, try to answer it yourself, then open the answer to check your reasoning. Questions are grouped by the chapter they belong to on EduRise, in the order of the Lebanese Grade 9 Chemistry programme.
15 Grade 9 Chemistry practice questions
Chapter: The Atom · easy
1. Which particle carries a positive charge?
- A. the electron
- B. the proton
- C. the neutron
- D. the nucleon
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Answer: the proton
Explanation: Protons are positive, electrons negative, neutrons neutral.
Chapter: The Atom · easy
2. Which term matches this definition: "an energy level around the nucleus that can hold a limited number of electrons"?
- A. electron shell
- B. proton
- C. cation
- D. nucleon
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Answer: electron shell
Explanation: Electron shell: an energy level around the nucleus that can hold a limited number of electrons
Chapter: Chemical Bonds · easy
3. Which term matches this definition: "a covalent bond made of three shared pairs of electrons"?
- A. lone pair
- B. triple bond
- C. covalence
- D. metallic bond
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Answer: triple bond
Explanation: Triple bond: a covalent bond made of three shared pairs of electrons
Chapter: Chemical Bonds · easy
4. What is the meaning of "covalence"?
- A. a neutral group of atoms held together by covalent bonds
- B. the regular three-dimensional arrangement of ions in an ionic solid
- C. the number of covalent bonds an atom usually forms
- D. the electrostatic attraction between a cation and an anion after an electron transfer
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Answer: the number of covalent bonds an atom usually forms
Explanation: Covalence: the number of covalent bonds an atom usually forms
Chapter: Oxidation and Reduction · easy
5. Which term matches this definition: "the equation of one couple showing the electrons exchanged"?
- A. metal extraction
- B. galvanization
- C. corrosion
- D. half-equation
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Answer: half-equation
Explanation: Half-equation: the equation of one couple showing the electrons exchanged
Chapter: Oxidation and Reduction · easy
6. What is the meaning of "reducing agent"?
- A. the reduction of a metal ore (oxide) to obtain the free metal
- B. a species that captures electrons and is reduced
- C. a metal such as gold or silver that is very hard to oxidize
- D. a species that gives electrons and is oxidized
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Answer: a species that gives electrons and is oxidized
Explanation: Reducing agent: a species that gives electrons and is oxidized
Chapter: Cells and Batteries · easy
7. Which term matches this definition: "a cell made of a zinc half-cell and a copper half-cell joined by a salt bridge"?
- A. electrolyte
- B. standard potential
- C. Daniell cell
- D. anode of a cell
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Answer: Daniell cell
Explanation: Daniell cell: a cell made of a zinc half-cell and a copper half-cell joined by a salt bridge
Chapter: Cells and Batteries · easy
8. Which term matches this definition: "the potential of a redox couple measured against the hydrogen electrode"?
- A. electrolyte
- B. half-cell
- C. standard potential
- D. salt bridge
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Answer: standard potential
Explanation: Standard potential: the potential of a redox couple measured against the hydrogen electrode
Chapter: Electrolysis · easy
9. In a Hoffman voltameter, 10 cm³ of dioxygen are collected. What volume of dihydrogen is collected at the same time?
- A. 10
- B. 20
- C. 5
- D. 40
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Answer: 20
Explanation: V(H₂) = 2 × V(O₂) = 20 cm³.
Chapter: Electrolysis · easy
10. Electrolysis converts…
- A. electrical energy into chemical energy
- B. heat into light
- C. chemical energy into electrical energy
- D. mechanical energy into heat
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Answer: electrical energy into chemical energy
Explanation: The reverse of a cell.
Chapter: Organic and Inorganic Compounds · easy
11. How would you classify calcium carbonate CaCO₃?
- A. organic (it contains a carbon chain)
- B. inorganic
- C. a hydrocarbon
- D. an alcohol
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Answer: inorganic
Explanation: CaCO₃ has no carbon chain: inorganic.
Chapter: Organic and Inorganic Compounds · easy
12. Which term matches this definition: "an organic compound carrying the hydroxyl group –OH on a carbon chain"?
- A. molecular formula
- B. functional group
- C. isomers
- D. alcohol
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Answer: alcohol
Explanation: Alcohol: an organic compound carrying the hydroxyl group –OH on a carbon chain
Chapter: Hydrocarbons · easy
13. What is the meaning of "cyclic hydrocarbon"?
- A. a saturated hydrocarbon of general formula CₙH₂ₙ₊₂ with only single bonds
- B. a family of compounds with the same general formula whose members differ by CH₂
- C. a hydrocarbon whose carbon chain is closed into a ring
- D. an unsaturated hydrocarbon of general formula CₙH₂ₙ₋₂ containing one C≡C triple bond
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Answer: a hydrocarbon whose carbon chain is closed into a ring
Explanation: Cyclic hydrocarbon: a hydrocarbon whose carbon chain is closed into a ring
Chapter: Hydrocarbons · easy
14. Which term matches this definition: "a saturated hydrocarbon of general formula CₙH₂ₙ₊₂ with only single bonds"?
- A. alkane
- B. ethene (ethylene)
- C. alkene
- D. saturated hydrocarbon
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Answer: alkane
Explanation: Alkane: a saturated hydrocarbon of general formula CₙH₂ₙ₊₂ with only single bonds
Chapter: Properties of Hydrocarbons · easy
15. Which term matches this definition: "a substance burnt to release energy"?
- A. polyethylene
- B. hydrogenation
- C. fuel
- D. substitution reaction
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Answer: fuel
Explanation: Fuel: a substance burnt to release energy
More practice
These are sample questions only. The full Grade 9 Chemistry course on EduRise includes every chapter, lessons, 1,352 questions and timed exams.
Chemistry questions in other grades
Other Grade 9 subjects
See also: Grade 9 Chemistry chapters · All question pages · Study guides
About these questions
Where do these Grade 9 Chemistry questions come from?
They are a sample from EduRise's Grade 9 Chemistry question bank (1,352 questions across 13 chapters), written to follow the Lebanese curriculum. Each chapter on EduRise has its own practice set and a timed exam.
Are the answers explained?
Yes. Every question on EduRise shows the correct answer and an explanation after you answer, in practice mode and in the exam review.
How do I get the full question bank?
Register at edurise.me and subscribe ($10/month) to practise every chapter of Grade 9 Chemistry, take the timed exams and track your progress.
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