This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 5 Physical And Chemical Changes – Quiz 37 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 37 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What happens to the molecules of a substance during a physical change? A) They are rearranged to form new substances. B) They remain the same but are rearranged. C) They are destroyed. D) They are created. Show Answer Correct Answer: B) They remain the same but are rearranged. 2. When water boils, how does the arrangement and the movement of molecules change? A) There is no change in the molecules. B) The molecules spread out and can move faster. C) The molecules spread out and move slower. D) The molecules get closer together and move faster. Show Answer Correct Answer: B) The molecules spread out and can move faster. 3. Crystallisation is an example of A) Irreversible chemical change. B) Reversible chemical change. C) Reversible physical change. D) Irreversible physical change. Show Answer Correct Answer: C) Reversible physical change. 4. Physical properties are A) Properties that can be observed without changing the identity of the substance. B) Properties that describe how a substance changes into a completely different substance. C) All the above. D) None of the above. Show Answer Correct Answer: A) Properties that can be observed without changing the identity of the substance. 5. The process of converting radiant energy from the sun into chemical energy stored in a molecule is called A) Cellular respiration. B) Photosynthesis. C) Mitochondria. D) Carbon dioxide. Show Answer Correct Answer: B) Photosynthesis. 6. What state is water in when it freezes? A) Solid. B) Liquid. C) Gas. D) Plasma. Show Answer Correct Answer: A) Solid. 7. Food that rots in the fridge is what type of change? A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical. 8. What does boiling point mean? A) The tempurture at which a liquid boils. B) The tempurture at which a substance boils. C) The Tempurture at which a solid boils. D) None of the above. Show Answer Correct Answer: B) The tempurture at which a substance boils. 9. Changes in which new substances are formed are ..... changes. A) Physical. B) Chemical. C) Odour. D) Colour. Show Answer Correct Answer: B) Chemical. 10. Which one is a physical change? A) Evaporation. B) Energy. C) Sublimation. D) Evaporation and sublimation. Show Answer Correct Answer: D) Evaporation and sublimation. 11. Bob heated ice until it became a liquid. Which term identifies this change? A) Boiling. B) Condensing. C) Freezing. D) Melting. Show Answer Correct Answer: D) Melting. 12. Percy is cutting the grass and picks up the clippings. He hates lawn work but loves the smell of cut grass. Percy has created a ..... change. A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical. 13. A chemical change is when A) The chemical properties change. B) The chemical properties do not change. C) A change where the characteristics do not change the substance. D) None of the above. Show Answer Correct Answer: A) The chemical properties change. 14. What change in matter happens when a perfume evaporates? A) Gas to liquid. B) Liquid to gas. C) All the above. D) None of the above. Show Answer Correct Answer: B) Liquid to gas. 15. Is baking soda mixed with vinegar a chemical change? A) No, because a solid is not formed. B) Yes, because a new gas has been produced. C) No, because a new substance is not formed. D) Yes, because a solid and liquid are combined. Show Answer Correct Answer: B) Yes, because a new gas has been produced. 16. You test by seeing which material can scratch the other material A) Hardness. B) Malleability. C) Density. D) Conductivity. Show Answer Correct Answer: A) Hardness. 17. What is a change in which new substances are formed? A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical. 18. Is burning wood a chemical or physical change? A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical. 19. A change where one or more new substances are created. A) Physical Change. B) Chemical Change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical Change. 20. Noah is baking a cake for his family. During which step of preparing the cake did Noah observe a chemical change? A) Cracking an egg into the batter. B) Mixing the batter together. C) Adding baking soda into the batter. D) Baking the cake in the oven. Show Answer Correct Answer: D) Baking the cake in the oven. 21. What happens during a physical change? A) A new substance is created. B) The substance's molecules are rearranged. C) The original substance is unchanged. D) A chemical reaction occurs. Show Answer Correct Answer: C) The original substance is unchanged. 22. The following are examples of physical change EXCEPT ..... A) Spoilage of milk. B) Slicing a piece of meat. C) Pounding rice grains. D) Chopping a piece of wood. Show Answer Correct Answer: A) Spoilage of milk. 23. When heat is removed from a bowl of water, the water will eventually A) Melt. B) Freeze. C) All the above. D) None of the above. Show Answer Correct Answer: B) Freeze. 24. Crushing an aluminum foil is an example of A) Physical change. B) Chemical change. C) Evaporation. D) Waste. Show Answer Correct Answer: A) Physical change. 25. A change in which the original substance can be regained by a change in conditions is called ..... A) A reversible change. B) A physical change. C) A chemical change. D) Both (a) and (b). Show Answer Correct Answer: D) Both (a) and (b). ← PreviousNext →Related QuizzesClass 7 Science Chapter 5 Physical And Chemical Changes Quiz 1Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 2Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 3Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 4Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 5Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 6Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 7Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 8Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 9Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books