Grade 7 Chemistry Questions and Answers
A free sample of Grade 7 Chemistry practice questions with the correct answer and an explanation, following the Lebanese curriculum. Useful for revision before school tests.
أسئلة الكيمياء للصف 7 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 7 Chemistry programme.
15 Grade 7 Chemistry practice questions
Chapter: Glassware Used in the Chemistry Laboratory · easy
1. Which term matches this definition: "a gas burner used to heat substances in the laboratory"?
- A. graduated cylinder
- B. crucible
- C. Bunsen burner
- D. stirring rod
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Answer: Bunsen burner
Explanation: Bunsen burner: a gas burner used to heat substances in the laboratory
Chapter: Glassware Used in the Chemistry Laboratory · easy
2. Which term matches this definition: "a small curved glass disc used to cover a beaker or evaporate a few drops"?
- A. crucible
- B. pipette
- C. watch glass
- D. Erlenmeyer flask
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Answer: watch glass
Explanation: Watch glass: a small curved glass disc used to cover a beaker or evaporate a few drops
Chapter: Classification of Matter · easy
3. Which term matches this definition: "a mixture whose components can be seen with the naked eye or a microscope"?
- A. periodic table
- B. heterogeneous mixture
- C. boiling point
- D. atom
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Answer: heterogeneous mixture
Explanation: Heterogeneous mixture: a mixture whose components can be seen with the naked eye or a microscope
Chapter: Classification of Matter · easy
4. Which term matches this definition: "symbols and numbers showing the elements in a compound, such as H₂O"?
- A. chemical formula
- B. mixture
- C. element
- D. pure substance
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Answer: chemical formula
Explanation: Chemical formula: symbols and numbers showing the elements in a compound, such as H₂O
Chapter: Separation Techniques · easy
5. Which term matches this definition: "separating by spinning rapidly so that denser particles go to the bottom"?
- A. centrifugation
- B. decantation
- C. distillation
- D. fractional distillation
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Answer: centrifugation
Explanation: Centrifugation: separating by spinning rapidly so that denser particles go to the bottom
Chapter: Separation Techniques · easy
6. Which term matches this definition: "separating solid grains of different sizes with a sieve"?
- A. sieving
- B. evaporation
- C. magnetic separation
- D. filtration
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Answer: sieving
Explanation: Sieving: separating solid grains of different sizes with a sieve
Chapter: Solutions · easy
7. Which term matches this definition: "the mass of the solution equals the mass of solute plus the mass of solvent"?
- A. soluble
- B. conservation of mass in dissolving
- C. insoluble
- D. miscible liquids
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Answer: conservation of mass in dissolving
Explanation: Conservation of mass in dissolving: the mass of the solution equals the mass of solute plus the mass of solvent
Chapter: Solutions · easy
8. Which term matches this definition: "able to dissolve in a given solvent"?
- A. dissolving
- B. dilution
- C. soluble
- D. concentrated solution
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Answer: soluble
Explanation: Soluble: able to dissolve in a given solvent
Chapter: Colloids and Suspensions · easy
9. What is the meaning of "turbidity"?
- A. that lets light pass through so that objects can be seen behind it
- B. the property that decides whether a mixture is a solution, a colloid or a suspension
- C. the cloudiness of water caused by suspended or colloidal particles
- D. the substance that is spread out in small particles in a colloid
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Answer: the cloudiness of water caused by suspended or colloidal particles
Explanation: Turbidity: the cloudiness of water caused by suspended or colloidal particles
Chapter: Colloids and Suspensions · easy
10. What is the meaning of "emulsifier"?
- A. a substance that keeps an emulsion stable, such as egg yolk in mayonnaise
- B. the substance that is spread out in small particles in a colloid
- C. a colloid of gas bubbles dispersed in a liquid or a solid
- D. having the same composition and appearance everywhere
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Answer: a substance that keeps an emulsion stable, such as egg yolk in mayonnaise
Explanation: Emulsifier: a substance that keeps an emulsion stable, such as egg yolk in mayonnaise
Chapter: Reactants and Products · easy
11. Which term matches this definition: "the release of gas bubbles during a reaction"?
- A. effervescence
- B. carbon dioxide
- C. closed system
- D. product
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Answer: effervescence
Explanation: Effervescence: the release of gas bubbles during a reaction
Chapter: Reactants and Products · easy
12. What is the meaning of "iron sulfide"?
- A. the French chemist who showed that, in a reaction, the atoms of the reactants aren't lost and no new atoms appear
- B. a reaction of a substance with oxygen that releases heat and light
- C. a change of state or shape that produces no new substance
- D. the black solid formed when iron and sulfur are heated together
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Answer: the black solid formed when iron and sulfur are heated together
Explanation: Iron sulfide: the black solid formed when iron and sulfur are heated together
Chapter: Energy and Chemical Reactions · easy
13. Which term matches this definition: "a substance burned to release useful energy, such as wood, petrol or natural gas"?
- A. cold pack
- B. fuel
- C. respiration
- D. enzyme
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Answer: fuel
Explanation: Fuel: a substance burned to release useful energy, such as wood, petrol or natural gas
Chapter: Energy and Chemical Reactions · easy
14. What is the meaning of "catalyst"?
- A. the decomposition of a substance by electrical energy
- B. the slow exothermic reaction of glucose with oxygen in living cells that provides energy
- C. a substance that speeds up a reaction without being used up
- D. calcium oxide, which reacts with water in a strongly exothermic way
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Answer: a substance that speeds up a reaction without being used up
Explanation: Catalyst: a substance that speeds up a reaction without being used up
Chapter: Combustion and Pollution · easy
15. What is the meaning of "renewable energy"?
- A. rain made acidic by sulfur dioxide and nitrogen oxides dissolved in it
- B. energy from sources that do not run out, such as the sun, wind or water
- C. burning with too little oxygen, giving carbon monoxide and soot
- D. the three things needed for a fire: fuel, oxygen and heat
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Answer: energy from sources that do not run out, such as the sun, wind or water
Explanation: Renewable energy: energy from sources that do not run out, such as the sun, wind or water
More practice
These are sample questions only. The full Grade 7 Chemistry course on EduRise includes every chapter, lessons, 832 questions and timed exams.
Chemistry questions in other grades
Other Grade 7 subjects
See also: Grade 7 Chemistry chapters · All question pages · Study guides
About these questions
Where do these Grade 7 Chemistry questions come from?
They are a sample from EduRise's Grade 7 Chemistry question bank (832 questions across 8 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 7 Chemistry, take the timed exams and track your progress.
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