This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 5 Physical And Chemical Changes – Quiz 43 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 43 (12 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A chemical reaction in which magnesium ribbon burns can be represented as A) Magnesium + Oxygen $\rightarrow$ Magnesium oxide. B) Magnesium + Oxygen $\rightarrow$ Magnesium hydroxide. C) Magnesium + Water $\rightarrow$ Magnesium hydroxide. D) Magnesium + Oxygen + Water$\rightarrow$ Magnesium hydroxide. Show Answer Correct Answer: A) Magnesium + Oxygen $\rightarrow$ Magnesium oxide. 2. To change from one state of matter to another state of matter is called? A) Phase change. B) Potential change. C) Kinetic change. D) Thermal change. Show Answer Correct Answer: A) Phase change. 3. The amount of matter in an object, measured in grams or kilograms. It's different from weight in which gravity does not affect it. Gravity affects weight. A) Matter. B) Mass. C) Volume. D) Solubility. Show Answer Correct Answer: B) Mass. 4. When ice is heated, it changes to water and water on further heating gets converted to steam. What happens when steam is condensed? A) New substance is formed. B) No new substance is formed. C) Gaseous phase changes to liquid phase. D) Both (b) and (c) are correct. Show Answer Correct Answer: D) Both (b) and (c) are correct. 5. During Chemical Reactions, the substances that are used are called? A) Precipitate. B) Corrosion. C) Reactants. D) Products. Show Answer Correct Answer: C) Reactants. 6. Which is the definition of volume? A) The amount of matter an object contains. B) Length X width X height. C) A measure of the amount of space an object takes up. D) None of the above. Show Answer Correct Answer: C) A measure of the amount of space an object takes up. 7. What are the examples of a physical change A) Baking a cake. B) Crumpling a cookie. C) Rusting of iron. D) None of the above. Show Answer Correct Answer: B) Crumpling a cookie. 8. Baking a cupcake A) Physcial change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 9. Oxygen is an example of A) Compound. B) Element. C) Homogeneous mixture. D) Heterogeneous mixture. Show Answer Correct Answer: B) Element. 10. When iron is combined with oxygen in water, rust is formed A) The oxygen and iron are solutions. B) The oxygen and iron are mixtures. C) The oxygen and iron are reactants. D) The oxygen and iron are products. Show Answer Correct Answer: C) The oxygen and iron are reactants. 11. Galvanization is the process in which A) Iron is coated on zinc metal. B) Zinc and iron are mixed in molten state. C) Zinc is coated as a layer on iron. D) Carbon is mixed with iron and heated. Show Answer Correct Answer: C) Zinc is coated as a layer on iron. 12. Scenario:Water evaporates when heated. Does a chemical or physical change occur? A) Change in state. B) Chemical change. C) No change. D) Physical change. Show Answer Correct Answer: D) Physical change. ← PreviousRelated 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