This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 5 Physical And Chemical Changes – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 5 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The mouth digests (breaks down) ..... by chewing. A) Mechanically. B) Chemically. C) Elimination. D) Absorption. Show Answer Correct Answer: A) Mechanically. 2. A compound is A) Anything that takes up space. B) A substance made up of atoms of only one kind. C) Two or more different elements in exact proportion. D) None of the above. Show Answer Correct Answer: C) Two or more different elements in exact proportion. 3. Breaking a glass A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical change. 4. Which change describes a substance that changes shape, form, or appearance but is still the same substance? A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical change. 5. What is the main difference between a chemical change and a physical change? A) Chemical changes are reversible, while physical changes are not. B) Physical changes result in new substances, while chemical changes do not. C) Chemical changes result in new substances, while physical changes do not. D) Physical changes involve energy changes, while chemical changes do not. Show Answer Correct Answer: C) Chemical changes result in new substances, while physical changes do not. 6. A student listed some changes observed in daily life. Which change is an example of a physical change? A) Forming yogurt from milk. B) Rotting of a dead log of wood. C) Heating of corn kernels to make popcorn heating of corn kernels to make popcorn. D) Crushing sugar candy into powder. Show Answer Correct Answer: D) Crushing sugar candy into powder. 7. Mrs. McGinnis begins grading papers. She writes on it with a marker. Then, she accidentally tears the paper in half. So, she ends up crumpling the paper into a ball and throws it away. Which are examples of physical changes? A) Writing with marker. B) Tearing it in half. C) Crumpling it up. D) All of the above. Show Answer Correct Answer: D) All of the above. 8. What change in matter happens when the wet clothes hung on a clothesline during a sunny day become dry? A) Liquid to gas. B) Liquid to solid. C) All the above. D) None of the above. Show Answer Correct Answer: A) Liquid to gas. 9. When two substances are combined and create their own heat and light, this is a ..... change. A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical. 10. Is breaking bond of large molecules from food a physical or chemical change? A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 11. Baking a cake is a (a) change. A) A. chemical. B) Physical. C) Emotional. D) None of the above. Show Answer Correct Answer: A) A. chemical. 12. Which of the following is an evidence of a chemical change? A) A change in color. B) Melting of ice. C) Boiling of water. D) Breaking of glass. Show Answer Correct Answer: A) A change in color. 13. Is cooking an egg a A) Chemical change. B) Physical change. C) Neither. D) Both. Show Answer Correct Answer: A) Chemical change. 14. You make chocolate milk. A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical change. 15. What property stays the same during physical and chemical changes? A) Density. B) Shape. C) Mass. D) Arrangement of particle. Show Answer Correct Answer: C) Mass. 16. Which of these shows a chemical change? A) Water melting. B) Baking soda reacting with vinegar and releasing a new gas. C) Water evaporating. D) Slicing up an apple. Show Answer Correct Answer: B) Baking soda reacting with vinegar and releasing a new gas. 17. Which of the following is an example that includes evidence of a chemical reaction? A) A sample of zinc is placed in water and it settles to the bottom. B) A solid block of ice is heated and it completely melts into a liquid. C) Sugar that is burned gives off an odor and turns brown and then black. D) A tomato is placed into a blender and chopped up into smaller pieces. Show Answer Correct Answer: C) Sugar that is burned gives off an odor and turns brown and then black. 18. Sign of chemical change A) Unexpected temperature change. B) Shape change. C) Texture change. D) None of the above. Show Answer Correct Answer: A) Unexpected temperature change. 19. Hydrochloric acid reacts with potassium hydroxide to produce a salt, water, and heat. A) Chemical Change. B) Physical Change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical Change. 20. What is the process by which a chemical change occurs? A) Conservation of Matter. B) Physical Change. C) Chemical reaction. D) Condensation. Show Answer Correct Answer: C) Chemical reaction. 21. Lighting a match A) Physcial change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 22. When you increase the energy by heating a liquid what happens to the motion of the molecules A) They slow down. B) They speed up. C) Heat doesnt change the motion of the molecules. D) None of the above. Show Answer Correct Answer: B) They speed up. 23. Scenario:Iron rusts when exposed to air. Does a chemical or physical change occur? A) Change in state. B) Chemical change. C) Physical change. D) Change in color. Show Answer Correct Answer: B) Chemical change. 24. Is bleaching your hair a physical or chemical change? A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical. 25. A new substances that results from a chemical reaction. A) Chemical Reaction. B) Chemical Change. C) Reactants. D) Products. Show Answer Correct Answer: D) Products. ← 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 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 10Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books