[TOP 100] GCSE Chemistry Quiz Questions Answers: we will discuss gcse chemistry questions with answers.
GCSE Chemistry refers to the study of chemistry at the General Certificate of Secondary Education (GCSE) level in the United Kingdom. It is a qualification typically taken by students around the age of 16, usually after completing two years of study in secondary education. GCSE Chemistry is a part of the science curriculum and is one of the core subjects offered alongside GCSE Biology and GCSE Physics.
In GCSE Chemistry, students learn about the fundamental principles and concepts of chemistry, including atomic structure, chemical bonding, chemical reactions, acids and bases, organic chemistry, and environmental chemistry. The curriculum covers both theoretical knowledge and practical skills, emphasizing the scientific method and experimental techniques.
Students are assessed through written examinations, which include a combination of multiple-choice questions, structured questions, and longer extended response questions. The exams assess students’ understanding of concepts, their ability to apply scientific principles, and their practical skills.
GCSE Chemistry provides a foundation for further studies in chemistry or related fields at the A-level or higher education level. It also helps develop critical thinking, problem-solving, and analytical skills that are valuable in a wide range of scientific and non-scientific careers.
Chemistry Quiz with Answers | General Chemistry Quiz | GCSE Chemistry Quiz
1. Which of the following is an example of a pure substance?
a) Air
b) Sugar solution
c) Gold
d) Soil
Answer: c) Gold
2. Which of the following statements is true about acids?
a) Acids turn blue litmus paper red.
b) Acids have a pH greater than 7.
c) Acids are slippery to touch.
d) Acids neutralize bases.
Answer: a) Acids turn blue litmus paper red.
3. Which of the following elements is a metal?
a) Chlorine
b) Carbon
c) Sodium
d) Oxygen
Answer: c) Sodium
4. Which gas is produced when a metal reacts with an acid?
a) Oxygen
b) Carbon dioxide
c) Hydrogen
d) Nitrogen
Answer: c) Hydrogen
5. What is the chemical formula of water?
a) H2O2
b) H2O3
c) HO2
d) H2O
Answer: d) H2O
6. Which of the following is a physical change?
a) Burning of wood
b) Rusting of iron
c) Melting of ice
d) Digestion of food
Answer: c) Melting of ice
7. Which type of reaction occurs when a fuel combines with oxygen to produce carbon dioxide and water?
a) Combustion
b) Oxidation
c) Reduction
d) Neutralization
Answer: a) Combustion
8. What is the pH value of a neutral solution?
a) 0
b) 7
c) 14
d) 10
Answer: b) 7
9. Which of the following is a greenhouse gas?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Helium
Answer: b) Carbon dioxide
10. Which substance is a good conductor of electricity?
a) Plastic
b) Rubber
c) Copper
d) Glass
Answer: c) Copper
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11. Which of the following is an example of a renewable energy source?
a) Coal
b) Natural gas
c) Solar power
d) Nuclear power
Answer: c) Solar power
12. What is the chemical formula for methane?
a) CO2
b) H2O
c) CH4
d) O2
Answer: c) CH4
13. Which of the following is an example of a physical property?
a) Reactivity
b) Density
c) Flammability
d) Acidity
Answer: b) Density
14. Which of the following is an example of an exothermic reaction?
a) Melting ice
b) Photosynthesis
c) Burning paper
d) Dissolving salt in water
Answer: c) Burning paper
15. What is the chemical symbol for potassium?
a) P
b) K
c) S
d) Pt
Answer: b) K
16. Which of the following is an example of a displacement reaction?
a) Mixing vinegar and baking soda
b) Burning magnesium ribbon
c) Mixing hydrochloric acid and sodium hydroxide
d) Reacting zinc with copper sulfate
Answer: d) Reacting zinc with copper sulfate
17. What is the formula for calculating density?
a) Density = mass x volume
b) Density = mass / volume
c) Density = volume / mass
d) Density = mass + volume
Answer: b) Density = mass / volume
18. Which of the following is a product of photosynthesis?
a) Oxygen
b) Carbon dioxide
c) Water
d) Nitrogen
Answer: a) Oxygen
19. What is the main component of natural gas?
a) Methane
b) Ethanol
c) Propane
d) Butane
Answer: a) Methane
20. Which of the following is an example of a non-metal?
a) Iron
b) Copper
c) Silver
d) Sulfur
Answer: d) Sulfur
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21. Which of the following is the formula for sulfuric acid?
a) H2SO3
b) H2SO4
c) H2SO5
d) H2S
Answer: b) H2SO4
22. What is the name of the process by which a solid changes directly into a gas without becoming a liquid first?
a) Sublimation
b) Condensation
c) Evaporation
d) Dissolution
Answer: a) Sublimation
23. Which of the following is an example of an alkali?
a) Vinegar
b) Lemon juice
c) Sodium hydroxide
d) Ammonia
Answer: c) Sodium hydroxide
24. Which of the following is a greenhouse gas released from burning fossil fuels?
a) Oxygen
b) Nitrogen
c) Carbon monoxide
d) Carbon dioxide
Answer: d) Carbon dioxide
25. What is the atomic number of carbon?
a) 6
b) 12
c) 14
d) 16
Answer: a) 6
26. Which of the following is an example of an insulator?
a) Copper
b) Aluminum
c) Glass
d) Silver
Answer: c) Glass
27. What is the chemical formula for table salt?
a) HCl
b) NaCl
c) H2O
d) CO2
Answer: b) NaCl
28. What is the balanced equation for the reaction between hydrochloric acid and sodium hydroxide?
a) HCl + NaOH → H2O + NaCl
b) HCl + NaOH → NaCl + H2O
c) H2SO4 + NaOH → Na2SO4 + H2O
d) H2SO4 + NaOH → HCl + H2O
Answer: b) HCl + NaOH → NaCl + H2O
29. Which of the following is a characteristic of an exothermic reaction?
a) Absorbs heat from the surroundings
b) Decreases temperature
c) Releases energy to the surroundings
d) Requires a catalyst
Answer: c) Releases energy to the surroundings
30. Which of the following is an example of a physical mixture?
a) Water and salt solution
b) Iron and sulfur mixture
c) Vinegar
d) Carbon dioxide gas
Answer: b) Iron and sulfur mixture
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31. What is the formula for calculating the number of moles?
a) Moles = Mass / Volume
b) Moles = Mass x Volume
c) Moles = Concentration x Volume
d) Moles = Mass / Molar mass
Answer: d) Moles = Mass / Molar mass
32. Which of the following elements is a halogen?
a) Sodium
b) Oxygen
c) Chlorine
d) Calcium
Answer: c) Chlorine
33. Which of the following is a product of the reaction between an acid and a metal carbonate?
a) Water
b) Carbon dioxide
c) Hydrogen gas
d) Oxygen gas
Answer: b) Carbon dioxide
34. What is the chemical formula for hydrogen peroxide?
a) H2O2
b) HO2
c) H2O
d) H2CO3
Answer: a) H2O2
35. Which of the following is an example of a noble gas?
a) Helium
b) Fluorine
c) Nitrogen
d) Carbon
Answer: a) Helium
36. Which type of bond involves the transfer of electrons from one atom to another?
a) Covalent bond
b) Metallic bond
c) Ionic bond
d) Hydrogen bond
Answer: c) Ionic bond
37. What is the pH of a basic solution?
a) 0
b) 7
c) 14
d) 10
Answer: c) 14
38. Which of the following is a characteristic of a chemical change?
a) Reversible
b) Changes state
c) Changes color
d) No energy change
Answer: c) Changes color
39. Which gas is produced when an acid reacts with a metal oxide?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: d) Hydrogen
40. What is the process called when a solid changes directly into a liquid?
a) Condensation
b) Melting
c) Sublimation
d) Evaporation
Answer: b) Melting
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41. Which of the following elements is a metalloid?
a) Silicon
b) Copper
c) Aluminum
d) Sodium
Answer: a) Silicon
42. What is the name of the process by which a gas changes into a liquid?
a) Evaporation
b) Condensation
c) Sublimation
d) Solidification
Answer: b) Condensation
43. Which of the following is an example of a combustion reaction?
a) Rusting of iron
b) Digestion of food
c) Burning of wood
d) Mixing of vinegar and baking soda
Answer: c) Burning of wood
44. What is the chemical formula for carbon dioxide?
a) CO
b) CO2
c) CO3
d) C2O
Answer: b) CO2
45. Which of the following is an example of an alkali metal?
a) Magnesium
b) Calcium
c) Lithium
d) Aluminum
Answer: c) Lithium
46. Which type of reaction involves the combination of an acid and a base to form water and a salt?
a) Oxidation
b) Reduction
c) Neutralization
d) Hydrolysis
Answer: c) Neutralization
47. What is the product of the reaction between an acid and a metal?
a) Water
b) Carbon dioxide
c) Salt
d) Oxygen
Answer: c) Salt
48. Which of the following is the correct electron configuration for oxygen?
a) 1s2 2s2 2p4
b) 1s2 2s2 2p6
c) 1s2 2s2 2p2
d) 1s2 2s2 2p8
Answer: c) 1s2 2s2 2p4
49. What is the balanced equation for the reaction between hydrochloric acid and magnesium?
a) HCl + Mg → MgCl + H2
b) HCl + Mg → MgCl2 + H2
c) H2SO4 + Mg → MgSO4 + H2
d) H2SO4 + Mg → HCl + H2
Answer: b) HCl + Mg → MgCl2 + H2
50. Which of the following is an example of an endothermic reaction?
a) Freezing of water
b) Combustion of methane
c) Neutralization of an acid and a base
d) Reaction between an acid and a metal
Answer: a) Freezing of water
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51. Which of the following is an example of a catalyst?
a) Oxygen
b) Hydrogen
c) Iron
d) Sodium
Answer: c) Iron
52. What is the chemical formula for sodium chloride?
a) Na2CO3
b) NaOH
c) NaCl
d) Na2SO4
Answer: c) NaCl
53. Which of the following is an example of an alloy?
a) Gold
b) Silver
c) Copper
d) Bronze
Answer: d) Bronze
54. What is the pH value of a solution with a high concentration of hydrogen ions?
a) pH 0
b) pH 7
c) pH 14
d) pH 10
Answer: a) pH 0
55. Which of the following is the correct order of the electromagnetic spectrum from highest to lowest energy?
a) Gamma rays, X-rays, visible light, radio waves
b) Radio waves, visible light, X-rays, gamma rays
c) Gamma rays, visible light, X-rays, radio waves
d) Radio waves, X-rays, gamma rays, visible light
Answer: a) Gamma rays, X-rays, visible light, radio waves
56. What is the chemical formula for ammonia?
a) NH2
b) NH3
c) N2H4
d) NH4
Answer: b) NH3
57. Which of the following is an example of an exothermic process?
a) Melting of ice
b) Boiling of water
c) Dissolving salt in water
d) Photosynthesis
Answer: c) Dissolving salt in water
58. What is the product of the reaction between an acid and a metal oxide?
a) Water
b) Carbon dioxide
c) Salt
d) Oxygen
Answer: c) Salt
59. Which of the following is a greenhouse gas that is released during volcanic eruptions?
a) Methane
b) Carbon dioxide
c) Nitrogen
d) Oxygen
Answer: b) Carbon dioxide
60. What is the chemical symbol for silver?
a) Ag
b) Au
c) Al
d) Fe
Answer: a) Ag
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61. Which of the following is a non-renewable energy source?
a) Solar power
b) Wind power
c) Geothermal energy
d) Fossil fuels
Answer: d) Fossil fuels
62. What is the chemical formula for water?
a) H2O
b) CO2
c) NaCl
d) CH4
Answer: a) H2O
63. Which of the following is an example of a physical change?
a) Rusting of iron
b) Burning of wood
c) Digestion of food
d) Melting of ice
Answer: d) Melting of ice
64. What is the product of the reaction between an acid and a metal carbonate?
a) Water
b) Carbon dioxide
c) Hydrogen gas
d) Oxygen gas
Answer: b) Carbon dioxide
65. Which of the following is an example of a transition metal?
a) Sodium
b) Iron
c) Calcium
d) Aluminum
Answer: b) Iron
66. Which type of bond involves the sharing of electrons between atoms?
a) Covalent bond
b) Ionic bond
c) Metallic bond
d) Hydrogen bond
Answer: a) Covalent bond
67. What is the pH of a neutral solution?
a) 0
b) 7
c) 14
d) 10
Answer: b) 7
68. Which of the following is a characteristic of an acid?
a) Tastes sour
b) Feels slippery
c) Turns litmus paper blue
d) Forms positive ions in solution
Answer: a) Tastes sour
69. Which gas is produced when an acid reacts with a metal?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: d) Hydrogen
70. Which of the following is an example of a chemical change?
a) Freezing of water
b) Dissolving salt in water
c) Cutting paper into smaller pieces
d) Burning of wood
Answer: d) Burning of wood
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71. What is the chemical formula for hydrochloric acid?
a) HCl
b) H2O
c) H2SO4
d) NaOH
Answer: a) HCl
72. Which of the following is a property of metals?
a) Brittle
b) Dull
c) Good conductors of electricity
d) Low melting points
Answer: c) Good conductors of electricity
73. What is the name of the process by which a gas changes directly into a solid without becoming a liquid first?
a) Condensation
b) Deposition
c) Evaporation
d) Sublimation
Answer: b) Deposition
74. Which of the following is an example of a greenhouse gas?
a) Oxygen
b) Nitrogen
c) Methane
d) Argon
Answer: c) Methane
75. What is the atomic number of hydrogen?
a) 1
b) 6
c) 8
d) 10
Answer: a) 1
76. Which of the following is an example of a good insulator?
a) Copper
b) Aluminum
c) Plastic
d) Silver
Answer: c) Plastic
77. What is the chemical formula for sulfur dioxide?
a) SO
b) SO2
c) SO3
d) H2SO4
Answer: b) SO2
78. What is the balanced equation for the reaction between hydrochloric acid and sodium hydroxide?
a) HCl + NaOH → NaCl + H2O
b) HCl + NaOH → HClO + NaCl
c) H2SO4 + NaOH → Na2SO4 + H2O
d) H2SO4 + NaOH → HCl + H2O
Answer: a) HCl + NaOH → NaCl + H2O
79. Which of the following is a characteristic of an exothermic reaction?
a) Absorbs heat from the surroundings
b) Decreases temperature
c) Releases energy to the surroundings
d) Requires a catalyst
Answer: c) Releases energy to the surroundings
80. Which of the following is an example of a physical change?
a) Combustion of gasoline
b) Oxidation of iron
c) Dissolving sugar in water
d) Cooking an egg
Answer: c) Dissolving sugar in water
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81. Which of the following is an example of an alkali?
a) Sodium chloride
b) Calcium carbonate
c) Sodium hydroxide
d) Hydrochloric acid
Answer: c) Sodium hydroxide
82. What is the chemical symbol for gold?
a) Ag
b) Au
c) Al
d) Fe
Answer: b) Au
83. Which of the following is a product of the reaction between an acid and a metal oxide?
a) Water
b) Carbon dioxide
c) Hydrogen gas
d) Oxygen gas
Answer: a) Water
84. What is the chemical formula for carbon monoxide?
a) CO2
b) CO
c) CO3
d) C2O
Answer: b) CO
85. Which of the following is an example of a reducing agent?
a) Oxygen
b) Hydrogen
c) Carbon dioxide
d) Nitrogen
Answer: b) Hydrogen
86. Which type of bond involves the attraction between positive and negative ions?
a) Covalent bond
b) Metallic bond
c) Ionic bond
d) Hydrogen bond
Answer: c) Ionic bond
87. What is the pH of a solution that is neither acidic nor alkaline?
a) 0
b) 7
c) 14
d) 10
Answer: b) 7
88. Which of the following is a characteristic of a physical change?
a) Irreversible
b) Changes state
c) Changes color
d) Releases energy
Answer: b) Changes state
89. Which gas is produced when an acid reacts with a metal carbonate?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: c) Carbon dioxide
90. What is the process called when a gas changes directly into a solid?
a) Condensation
b) Melting
c) Sublimation
d) Evaporation
Answer: c) Sublimation
91. Which of the following is an example of a noble gas?
a) Oxygen
b) Hydrogen
c) Helium
d) Nitrogen
Answer: c) Helium
92. What is the chemical formula for sulfuric acid?
a) HCl
b) H2SO4
c) NaOH
d) NH3
Answer: b) H2SO4
93. Which of the following is an example of a combustion reaction?
a) Photosynthesis
b) Respiration
c) Rusting of iron
d) Burning of methane
Answer: d) Burning of methane
94. What is the chemical formula for sodium carbonate?
a) Na2CO3
b) NaCl
c) NaOH
d) NaHCO3
Answer: a) Na2CO3
95. Which of the following is an example of a halogen?
a) Sodium
b) Potassium
c) Chlorine
d) Calcium
Answer: c) Chlorine
96. Which type of reaction involves the gain of oxygen or the loss of hydrogen?
a) Oxidation
b) Reduction
c) Neutralization
d) Hydrolysis
Answer: a) Oxidation
97. What is the product of the reaction between an acid and a metal carbonate?
a) Water
b) Carbon dioxide
c) Salt
d) Oxygen
Answer: b) Carbon dioxide
98. Which of the following is the correct electron configuration for nitrogen?
a) 1s2 2s2 2p3
b) 1s2 2s2 2p4
c) 1s2 2s2 2p5
d) 1s2 2s2 2p6
Answer: a) 1s2 2s2 2p3
99. What is the balanced equation for the reaction between hydrochloric acid and calcium carbonate?
a) HCl + CaCO3 → CaCl2 + H2O
b) HCl + CaCO3 → CaCl2 + CO2 + H2O
c) H2SO4 + CaCO3 → CaSO4 + CO2 + H2O
d) H2SO4 + CaCO3 → HCl + CO2 + H2O
Answer: b) HCl + CaCO3 → CaCl2 + CO2 + H2O
100. Which of the following is an example of an exothermic reaction?
a) Dissolving salt in water
b) Freezing of water
c) Neutralization of an acid and a base
d) Reaction between an acid and a metal
Answer: c) Neutralization of an acid and a base