This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 5 Physical And Chemical Changes – Quiz 38 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 38 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In which activity does the substance change to a new substance? A) Boiling of milk. B) Freezing of water. C) Milk turning sour. D) Adding sugar to water. Show Answer Correct Answer: C) Milk turning sour. 2. In which situation is a chemical reaction not taking place? A) Salt dissolving in water. B) Rusting of an old car in a junk yard. C) Burning gasoline in a car. D) Digestion of food in your body. Show Answer Correct Answer: A) Salt dissolving in water. 3. Anything that has mass and takes up space is A) Matter. B) Mass. C) Concentration. D) Dissolve. Show Answer Correct Answer: A) Matter. 4. Frank has an eraser. It has a mass of 4g, and a volume of 2cm$^{3}$. What is its density? A) 8 g/cm$^{3}$. B) 2 g/cm$^{3}$. C) 1/2 g/cm$^{3}$. D) 24 g/cm$^{3}$. Show Answer Correct Answer: B) 2 g/cm$^{3}$. 5. The Law of Conservation of Mass tells us matter can't ..... A) Change color. B) Change state of matter. C) Be created or destroyed. D) Change temperature. Show Answer Correct Answer: C) Be created or destroyed. 6. An ice cream cone melting on a counter top is an example of A) A chemical change. B) A physical change. C) No change. D) Both a physical and a chemical change. Show Answer Correct Answer: B) A physical change. 7. In a chemical reaction, how do the reactants compare to the products? A) They are the same. B) They are different. C) All the above. D) None of the above. Show Answer Correct Answer: B) They are different. 8. How can you identify a physical change? A) By observing changes in the state, shape, or form of a substance without altering its chemical composition. B) By observing changes in the color of a substance. C) By observing changes in the taste of a substance. D) By observing changes in the smell of a substance. Show Answer Correct Answer: A) By observing changes in the state, shape, or form of a substance without altering its chemical composition. 9. Liv lit a match and said it was a physical change. Is she correct? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 10. Which best describes a chemical change in paper? A) Filing paper. B) Mailing paper. C) Burning paper. D) Cutting paper in half. Show Answer Correct Answer: C) Burning paper. 11. What is evaporation? A) Solid to a gas. B) Liquid to a gas. C) Solid to a liquid. D) Liquid to a solid. Show Answer Correct Answer: B) Liquid to a gas. 12. Which of the following shows all physical changes? A) A gas forming, melting or freezing, and dissolving. B) Ripping, melting or freezing, and dissolving. C) A precipitate forms, melting or freezing, and dissolving. D) An unexpected color change, dissolving, light or energy is released. Show Answer Correct Answer: B) Ripping, melting or freezing, and dissolving. 13. Which type of digestion breaks food into simpler nutrients that can be used by the cells? A) Chemical. B) Mechanical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical. 14. Which of the following statements describes a physical change? A) Rusting of iron in nails. B) Digestion of food in humans. C) Burning wood in a fireplace. D) Boiling of water on a stove. E) Metal corroding when dipped in acid. Show Answer Correct Answer: D) Boiling of water on a stove. 15. Blue liquid and yellow liquid mixed to make a green liquid A) Chemical Change. B) Physical Change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical Change. 16. ..... occurs when a liquid's particles slow down and the substance changes to a solid. A) Boiling. B) Evaporating. C) Freezing. D) Melting. Show Answer Correct Answer: C) Freezing. 17. Which of the following would be considered a physical property? A) Colour. B) Flammability. C) PH. D) Reactivity. Show Answer Correct Answer: A) Colour. 18. Spoiling of food is a ..... change. A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical. 19. Copper tarnishing is an example of a ..... change. A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical. 20. Is a change in physical state a chemical or physical change? A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical. 21. A chemical reaction is balanced when A) Both sides have the same elements. B) Both sides have the same number of atoms. C) Same subscripts. D) Same coefficients. Show Answer Correct Answer: B) Both sides have the same number of atoms. 22. During Chemical Reactions, the new substances created are called? A) Precipitate. B) Corrosion. C) Reactants. D) Products. Show Answer Correct Answer: D) Products. 23. Matter goes through a change resulting in a different state of matter. What type of change is most likely occurring? A) Chemical. B) Physical. C) Acids. D) Bases. Show Answer Correct Answer: B) Physical. 24. What can separate magnetic pieces from non-magnetic pieces? A) Magnet. B) Filter. C) Strainer. D) None of the above. Show Answer Correct Answer: A) Magnet. 25. Which is an example of chemical property? A) Color. B) Flammability. C) Shape. D) Size. Show Answer Correct Answer: B) Flammability. ← 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