This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 5 Physical And Chemical Changes – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A block of metal has a mass of 14.0 Kg and a volume of 2.0 Liters what is the density? A) 14.0 kg/l. B) 7.0 kg/l. C) 2.0 kg/l. D) 0.5 kg/l. Show Answer Correct Answer: B) 7.0 kg/l. 2. What physical change will happen to ice when left in a warm room? A) It will be cold. B) It will be hard and white. C) It melted to water. D) It reacted with oxygen. Show Answer Correct Answer: C) It melted to water. 3. For rusting, presence of ..... and ..... is essential. A) Water only. B) Carbon dioxide and water. C) Oxygen and water. D) Nitrogen and oxygen. Show Answer Correct Answer: C) Oxygen and water. 4. In which of the following examples is a mixture separated by using physical properties? A) Making coffee by using heater water. B) Freezing juice to make flavored ice. C) Using a filter to get the sand out of a puddle. D) Stirring water and salt to make salt water. Show Answer Correct Answer: C) Using a filter to get the sand out of a puddle. 5. Is melting butter for popcorn a chemical or physical change? A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical. 6. Which of the following indicates that a chemical reaction has occurred? A) Change in shape. B) Melting. C) Formation of a gas. D) Dissolving. Show Answer Correct Answer: C) Formation of a gas. 7. If you mix two substances together in a chemical reaction, what would happen? A) A new substance is formed. B) Nothing changes. C) You begin and end with the same two substances. D) None of the above. Show Answer Correct Answer: A) A new substance is formed. 8. When you break a cracker into pieces it is a A) Chemical change. B) Physical change. C) Chemical Weathering. D) Physical Weathering. Show Answer Correct Answer: B) Physical change. 9. What is digestion? A) Physical property. B) Chemical change. C) Physical change. D) None of the above. Show Answer Correct Answer: B) Chemical change. 10. Which of the following processes is a physical change? A) Rusting of iron. B) Baking a cake. C) Evaporation of water. D) Digesting food. Show Answer Correct Answer: C) Evaporation of water. 11. Roasting a marsh mellow A) Chemical change. B) Physical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical change. 12. Breaking a glass bottle into little pieces A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical change. 13. Name the metal which is used for galvanization? A) Chromium. B) Copper. C) Zinc. D) Aluminum. Show Answer Correct Answer: C) Zinc. 14. A change that alters the form or appearance of a material but does not make the material into another substance is a ..... change. A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical. 15. The substances that are combined during a chemical reaction A) Chemical Reaction. B) Chemical Change. C) Reactants. D) Products. Show Answer Correct Answer: C) Reactants. 16. Which property of a substance depends on how much of the substance there is? A) Density. B) Liquid. C) Boiling Point. D) Mass. Show Answer Correct Answer: D) Mass. 17. Scenario:Cutting a piece of fruit into slices. Does a chemical or physical change occur? A) Chemical change. B) Emotional change. C) Spiritual change. D) Physical change. Show Answer Correct Answer: D) Physical change. 18. How do you know that rusting is a chemical change? A) It changes color. B) Atoms were rearranged to form a new substance. C) We just know. D) The rust. Show Answer Correct Answer: B) Atoms were rearranged to form a new substance. 19. Which of the following is NOT an example of a physical change? A) Crumpled paper. B) Pencil sharpening. C) Broken glass. D) Sour milk. Show Answer Correct Answer: D) Sour milk. 20. What tool would you use to provide evidence that mass is neither created or destroyed in a chemical or physical change? A) Thermomter. B) Magnifying glass. C) Scale. D) Microscope. Show Answer Correct Answer: C) Scale. 21. Which is the best method to prevent rusting? A) Painting. B) Greasing. C) Galvanization. D) Precipitation. Show Answer Correct Answer: A) Painting. 22. What distinguishes each process as a chemical change A) Mixing of substances. B) New substance are created. C) Substances move to different locations. D) Substances are broken into smaller pieces. E) Substances are dissolved. Show Answer Correct Answer: B) New substance are created. 23. Which is an example of a physical change? A) Sodium and chlorine form salt. B) A copper ring turns white and green. C) A log burns in a fire. D) Using sand and water to build a sand castle on a beach. Show Answer Correct Answer: D) Using sand and water to build a sand castle on a beach. 24. Baking a cake is an example of a ..... A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 25. Barry lights his candles to get the air hot and make balloon to fly. A) Endothermic. B) Exothermic. C) All the above. D) None of the above. Show Answer Correct Answer: B) Exothermic. ← 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 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