This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 5 Physical And Chemical Changes – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 16 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Name the substances which are mixed with iron to make stainless steel. A) Carbon, Chromium, Zinc. B) Carbon, Chromium, Nickel. C) Tin, Nickel, Silver. D) Copper, gold, silver. Show Answer Correct Answer: B) Carbon, Chromium, Nickel. 2. Complete the given equation:Carbon dioxide+ ..... $\rightarrow$ Calcium carbonate + Water A) Iron. B) Sodium chloride. C) Copper sulphate. D) Lime water. Show Answer Correct Answer: D) Lime water. 3. Which of the following changes is not a physical change? A) Tearing of paper. B) Sharpening a pencil. C) Spoiled milk. D) Drying of clothes. Show Answer Correct Answer: C) Spoiled milk. 4. Which of these choices is a physical property? A) Solubility. B) Flammability. C) Ability to rust. D) Reaction with water. Show Answer Correct Answer: A) Solubility. 5. The change of matter from a liquid to solid is called ..... A) A. melting. B) B. freezing. C) C. boiling. D) None of the above. Show Answer Correct Answer: B) B. freezing. 6. Which of these describes a physical change in matter? A) Milk going sour. B) A nail rusting. C) A carton of juice freezing. D) Cooking an egg. Show Answer Correct Answer: C) A carton of juice freezing. 7. Toasting a bagel A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 8. What is a key difference between a chemical change and a physical change? A) Chemical changes are reversible, physical changes are not. B) Physical changes create new substances, chemical changes do not. C) Chemical changes involve the formation of new substances, physical changes do not. D) Physical changes involve energy changes, chemical changes do not. Show Answer Correct Answer: C) Chemical changes involve the formation of new substances, physical changes do not. 9. Peristalsis refers to A) One of the digestive organs. B) The action of the stomach. C) Heart rate increasing. D) Smooth muscles moving food through the digestive system. Show Answer Correct Answer: D) Smooth muscles moving food through the digestive system. 10. A change in which a substance undergoes changes in its physical properties is called ..... A) Chemical change. B) Physical change. C) Irreversible change. D) Biological change. Show Answer Correct Answer: B) Physical change. 11. ..... occurs when a solid's particles speed up and the substance changes to a liquid. A) Evaporating. B) Boiling. C) Freezing. D) Melting. Show Answer Correct Answer: D) Melting. 12. Scenario:Milk turns sour. Does a chemical or physical change occur? A) Chemical change. B) Emotional change. C) Spiritual change. D) Physical change. Show Answer Correct Answer: A) Chemical change. 13. Which statement best describes evidence that a chemical reaction occurs as a cake bakes? A) The water in the cake batter evaporates. B) The cake rises as gas bubbles form in the baking cake. C) The cake takes the shape of the container in which it is baked. D) The water in the cake batter is used to keep the cake moist as it bakes. Show Answer Correct Answer: B) The cake rises as gas bubbles form in the baking cake. 14. Is spoiling food (food that is going bad) 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. 15. Molecules are formed when two or more ..... join together. A) Blocks. B) Books. C) Atoms. D) Sizes. Show Answer Correct Answer: C) Atoms. 16. Reacts with Air:Chemical or Physical Property A) Chemical Property. B) Physical Property. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical Property. 17. What is the formula of rust? A) Patch. B) Fe3O4. C) FeO. D) None of these. Show Answer Correct Answer: A) Patch. 18. You know you a chemical reaction has occurred if A) There is a precipitate. B) There is a color change. C) There is a temperature change. D) All of these answers are evidence. Show Answer Correct Answer: D) All of these answers are evidence. 19. When water changes states from liquid to solid to gas it is because of differences or changes in A) Shape. B) Mixture. C) Temperature. D) Reactant. Show Answer Correct Answer: C) Temperature. 20. What is a key characteristic of a physical change? A) Formation of a new substance. B) Change in color. C) Change in state. D) Release of gas. Show Answer Correct Answer: C) Change in state. 21. A plant carries out photosynthesis. A) Endothermic. B) Exothermic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Endothermic. 22. Which of the following examples model physical change during digestion? A) Burning toast. B) Freezing pickle juice to create a Popsicle. C) Grinding food in a blender. D) Cooking an egg with oil. Show Answer Correct Answer: C) Grinding food in a blender. 23. In ..... changes new substances are produced. A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical. 24. Evidence of a chemical reactions is anything that shows- A) A new substance has formed. B) A solid dissolved in a liquid. C) Interaction between 2 gases. D) A change in the state of matter. Show Answer Correct Answer: A) A new substance has formed. 25. Is hammering wood to build a treehouse a physical or chemical change? A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical change. ← 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