This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 5 Physical And Chemical Changes – Quiz 40 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 40 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Melting of a wax is a ..... change. A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical. 2. Luster (shininess) A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical. 3. Is frying an egg a physical or chemical change? A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical. 4. Prevention of rusting in iron by coating it with zinc is called A) Oiling. B) Electroplating. C) Greasing. D) Galvanization. E) Painting. Show Answer Correct Answer: D) Galvanization. 5. Margaret places a cube of butter in a pan and places the pan on a heated stove top. What change can she observe? A) A change of state and a change in shape a change of state and a change in shape. B) A change in mass alone. C) A change of state alone. D) A change of color alone. Show Answer Correct Answer: A) A change of state and a change in shape a change of state and a change in shape. 6. When Magnesium ribbon is ignited using a candle flame, it burns with a ..... A) Sparkling red light. B) Dull yellow light. C) Bright green light. D) Brilliant white light. Show Answer Correct Answer: D) Brilliant white light. 7. What evidence would indicate a chemical change during digestion? A) Food being chewed into smaller pieces. B) The stomach churning food. C) The production of gas in the intestines. D) Food moving through the digestive tract. Show Answer Correct Answer: C) The production of gas in the intestines. 8. Something that starts a chemical change. A) Starter. B) Chemical Reaction. C) Reactant. D) Catalyst. Show Answer Correct Answer: D) Catalyst. 9. A glass breaks. Physical Change Chemical Change A) Physical Change. B) Chemical Change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical Change. 10. Identify the type of reversible change.Water vapour to Liquid water A) Melting. B) Boiling. C) Condensation. D) Evaporation. Show Answer Correct Answer: C) Condensation. 11. Dissolving sugar in water is an example of a A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical change. 12. Flammability (burns) A) Physical Property. B) Chemical Property. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical Property. 13. Both chemical and physical changes occur in digestion. A physical change occurs when ..... A) A change in color occurs. B) A new substance is created. C) Shape or size is altered. D) Light is produced. E) All of the above. Show Answer Correct Answer: C) Shape or size is altered. 14. Mixing Vinegar and Baking Soda will cause a A) Chemical Change. B) Physical Change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical Change. 15. Have you noticed when steam is coming off of the pavement. Steam is most likely forming because the pavement is A) Cooling the rainwater enough to form a gas. B) Heating the rainwater enough to form a solid. C) Heating the rainwater enough to form a vapor. D) Cooling the rainwater enough to form a liquid. Show Answer Correct Answer: C) Heating the rainwater enough to form a vapor. 16. Which best describes why a diabetic should not have too many carbohydrates? A) Carbohydrates break down into sugars, which could cause a diabetic to have a high blood sugar level. B) Carbohydrates are known for giving people energy and diabetics do not need that much energy. C) Diabetic should eat a healthy diet and carbohydrates are not healthy. D) Carbohydrates are too difficult for the body to break down putting too much stress on the organs of a diabetic. Show Answer Correct Answer: A) Carbohydrates break down into sugars, which could cause a diabetic to have a high blood sugar level. 17. What kind of change is it when liquid water freezes into ice? A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical. 18. Which is a way that a piece of paper can go through a chemical change? A) Fold the paper in half. B) Soak the paper in water. C) Burn the paper with fire. D) Cut the paper with scissors. Show Answer Correct Answer: C) Burn the paper with fire. 19. A carton of milk going sour is a A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 20. A chemical property describes A) How a substance reacts with other substances. B) How much energy a substance has. C) How dangerous a substance is. D) How something tastes. Show Answer Correct Answer: A) How a substance reacts with other substances. 21. Scrambling eggs is an example of A) A physical change. B) A chemical change. C) Solution. D) None of the above. Show Answer Correct Answer: B) A chemical change. 22. Rusting of iron is an example of a: A) Reversible change. B) Fast change. C) Slow change. D) Physical change. Show Answer Correct Answer: C) Slow change. 23. Which of the following would indicate the formation of a new substance? A) A liquid turns to a solid. B) A sample of metal melts. C) Bubbles and fizzing occur. D) A solid dissolves in a liquid. Show Answer Correct Answer: C) Bubbles and fizzing occur. 24. Copper roof changing color A) Chemical Change. B) Physical Change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical Change. 25. Explain the process of crystallization. A) Crystallization is the process of forming solid crystals from a homogeneous solution by cooling or evaporation of the solvent. B) Crystallization is the process of forming solid crystals from a heterogeneous solution by heating the solvent. C) Crystallization is the process of forming gas crystals from a homogeneous solution. D) Crystallization is the process of forming liquid crystals from a heterogeneous solution. Show Answer Correct Answer: A) Crystallization is the process of forming solid crystals from a homogeneous solution by cooling or evaporation of the solvent. ← 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