This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 5 Physical And Chemical Changes – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 12 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following processes is a chemical change? A) Boiling water. B) Burning wood. C) Melting ice. D) Breaking glass. Show Answer Correct Answer: B) Burning wood. 2. Which of the two is permanent change chemical change or physical change? A) Physical. B) Chemical. C) All of them. D) None of them. Show Answer Correct Answer: B) Chemical. 3. All matter is made of tiny building blocks called A) Legos. B) Atoms. C) Wood. D) Volume. Show Answer Correct Answer: B) Atoms. 4. What happens when chemical bonds break and new bonds form? A) A physical change. B) A chemical reaction. C) Matter is destroyed. D) Surface area increases. Show Answer Correct Answer: B) A chemical reaction. 5. When a liquid becomes a solid, freezing occurs. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 6. Galvanisation is a process used to prevent the rusting of which of the following? A) Iron. B) Zinc. C) Aluminium. D) Copper. Show Answer Correct Answer: A) Iron. 7. Wood rotting is an example of a ..... A) Physical Property. B) Physical Change. C) Chemical Property. D) Chemical Change. Show Answer Correct Answer: D) Chemical Change. 8. During an experiment, a student observes bubbles forming when two substances are mixed. What does this indicate? A) A physical change is occurring. B) A chemical change is occurring. C) No change is occurring. D) The substances are dissolving. Show Answer Correct Answer: B) A chemical change is occurring. 9. Which of these is a result of a chemical change? A) A mixture. B) A solution. C) A new substance. D) Melting or freezing. Show Answer Correct Answer: C) A new substance. 10. You mix a red liquid and a white solid together. They turn yellow and the temperature increases. This is a ..... A) Physical change. B) Chemical Change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical Change. 11. Heat will continue to transfer between two areas or objects until A) Melting point is reached. B) The colder object absorbs all the heat energy. C) Both objects are the same temperature. D) All heat is lost to the air. Show Answer Correct Answer: C) Both objects are the same temperature. 12. Crushing a can A) Physical change. B) Chemical change. C) Non of the above. D) None of the above. Show Answer Correct Answer: A) Physical change. 13. Which is an example of a different substance being formed? A) Glass breaking. B) Cutting a paper. C) Water freezing. D) Baking a cake. Show Answer Correct Answer: D) Baking a cake. 14. A physical change is A) A change where the characteristics do not change the substance. B) A change where the characteristics do change the substance. C) A change where the chemistry changes. D) None of the above. Show Answer Correct Answer: A) A change where the characteristics do not change the substance. 15. Cutting a hard boiled egg A) Physcial change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physcial change. 16. How can you say that ripening of a fruit is a chemical change? A) After it gets ripened we cant get the unripened fruit again. B) After it gets ripened we eat it then we cant get that back. C) After it gets ripened it forms a as a new fruit. D) None of the above. Show Answer Correct Answer: C) After it gets ripened it forms a as a new fruit. 17. Which of these is a chemical property of a sheet of paper? A) The paper can be burned. B) The paper can be crumpled. C) The paper does not attract a magnet. D) The paper does not conduct electricity. Show Answer Correct Answer: A) The paper can be burned. 18. A clear liquid from a flask is poured into another clear liquid in a beaker. Which of the following results of this procedure would indicate a new substance was formed? A) The level of the substance in the beaker is higher after the other liquid is added. B) A yellow solid forms and then settles to the bottom of the beaker. C) Small white crystals are left behind in the flask that held the first liquid. D) None of the above. Show Answer Correct Answer: B) A yellow solid forms and then settles to the bottom of the beaker. 19. Pancakes cook on a griddle A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 20. Which of the following is a Physical Property A) Toxicity. B) Flammability. C) Malleability. D) Reactivity. Show Answer Correct Answer: C) Malleability. 21. Bob claims that ice cubes release heat when they melt. Paula claims that ice cubes absorb heat when they melt. Which statement identifies the correct claim? A) Paula. B) Bob. C) All the above. D) None of the above. Show Answer Correct Answer: A) Paula. 22. When Magnesium ribbon is burnt in oxygen, the product obtained is ..... A) Magnesium chloride. B) Magnesium sulphate. C) Magnesium carbide. D) Magnesium oxide. Show Answer Correct Answer: D) Magnesium oxide. 23. Solubility (dissolves):Chemical or Physical Property A) Chemical Property. B) Physical Property. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical Property. 24. Water is heated and changed to steam A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical change. 25. What happens to water molecules when they are heated up? A) The molecules slow down and spread apart. B) The molecules speed up and stay close together. C) The molecules speed up and spread apart. D) The molecules don't do anything. Show Answer Correct Answer: C) The molecules speed up and spread apart. ← 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