GCSE Science Quiz GCSE Foundation and Higher Science Quiz 1. What is the chemical symbol for water? A) H B) O2 C) H2O D) HO E) H3O 2. What is the unit of force? A) Pascal B) Newton C) Joule D) Watt E) Volt 3. What is the powerhouse of the cell? A) Nucleus B) Mitochondria C) Ribosome D) Endoplasmic reticulum E) Golgi apparatus 4. What is the boiling point of water at sea level? A) 100°C B) 0°C C) 50°C D) 120°C E) 80°C 5. What is the approximate radius of the Earth? A) 6400 km B) 1200 km C) 3200 km D) 8000 km E) 5000 km 6. What is the pH level of pure water? A) 0 B) 7 C) 14 D) 3 E) 10 7. What is the function of chlorophyll in plants? A) Water absorption B) Nutrient storage C) Photosynthesis D) Cell division E) Respiration 8. What is the main gas in the Earth's atmosphere? A) Oxygen B) Carbon Dioxide C) Nitrogen D) Helium E) Hydrogen 9. What type of rock is formed from molten material? A) Sedimentary B) Igneous C) Metamorphic D) Fossilized E) Composite 10. What is the primary source of energy for the Earth? A) The Moon B) The Sun C) Geothermal D) Nuclear E) Wind 11. What is the molecular formula of glucose? A) C6H12O6 B) C6H6 C) C12H22O11 D) C5H10O5 E) C6H10O5 12. What is the process of a solid turning directly into a gas called? A) Sublimation B) Evaporation C) Condensation D) Freezing E) Melting 13. In a reaction, what is the term for the amount of product formed? A) Yield B) Efficiency C) Rate D) Concentration E) Volume 14. What is the primary function of ribosomes in a cell? A) DNA replication B) Protein synthesis C) Energy production D) Lipid production E) Waste removal 15. What is the term for the energy stored in chemical bonds? A) Kinetic energy B) Potential energy C) Thermal energy D) Mechanical energy E) Nuclear energy 16. What is the main purpose of the scientific method? A) To collect data B) To prove theories C) To test hypotheses D) To conduct experiments E) To analyze results 17. In an electric circuit, what does a resistor do? A) Increases voltage B) Decreases current C) Stores energy D) Converts energy E) Measures current 18. What is the primary component of the cell membrane? A) DNA B) Phospholipids C) Proteins D) Carbohydrates E) RNA 19. What is the effect of increasing temperature on the rate of a chemical reaction? A) Decreases the rate B) Increases the rate C) No effect D) Stops the reaction E) Changes the products 20. Which process do plants use to make food? A) Respiration B) Fermentation C) Photosynthesis D) Digestion E) Transpiration 21. What is the main function of the liver? A) Digestion B) Filtration of blood C) Hormone production D) Oxygen transport E) Immune response 22. What is the basic unit of life? A) Atom B) Molecule C) Cell D) Tissue E) Organ 23. What is the effect of a catalyst on a chemical reaction? A) Slows down the reaction B) Increases the activation energy C) Changes the products D) Speeds up the reaction E) Has no effect 24. What type of energy does an object have due to its motion? A) Potential energy B) Kinetic energy C) Thermal energy D) Chemical energy E) Nuclear energy 25. What is the primary gas produced during photosynthesis? A) Oxygen B) Carbon Dioxide C) Nitrogen D) Methane E) Hydrogen Submit 0%
