This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 5 Physical And Chemical Changes – Quiz 26 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 26 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The best way to separate a mixture of salt and water is by A) Chemical change. B) Evaporation. C) Burn it. D) Shape. Show Answer Correct Answer: B) Evaporation. 2. The temperature at which a liquid changes to a gas is the ..... A) Condensation. B) Boiling point. C) Freezing. D) Melting. Show Answer Correct Answer: B) Boiling point. 3. Particles move quickest A) Solid. B) Liquid. C) Gas. D) Solid, liquid and gas. Show Answer Correct Answer: C) Gas. 4. The ability to melt A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical. 5. Can react with vinegar A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical. 6. What is the boiling point of water on the Farenheit scale? A) 212 degrees. B) 100 degrees. C) 0 degrees. D) 32 degrees. Show Answer Correct Answer: A) 212 degrees. 7. Sugar dissolving in water is a A) Chemical Change. B) Physical Change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical Change. 8. Which of the following describes a chemical property of matter? A) Sediment moves in streams. B) Food is chewed by teeth. C) Acid rain reacts with rocks. D) Sugar dissolves in water. E) Ice melts in the sunlight. Show Answer Correct Answer: C) Acid rain reacts with rocks. 9. A green powder is heated and a gas is liberated while it turns to a black solid. This describes A) Physical Change. B) Chemical Change. C) Change in State. D) Change in Temperature. Show Answer Correct Answer: B) Chemical Change. 10. Is mowing the lawn a physical or chemical change? A) Physical change. B) Chemcial change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical change. 11. A change in chemical structure, resulting in a new substance A) Chemical Reaction. B) Chemical Change. C) Reactants. D) Products. Show Answer Correct Answer: B) Chemical Change. 12. A change in which NEW substances are formed. A) Chemical change. B) Physical change. C) Casual change. D) Formal change. Show Answer Correct Answer: A) Chemical change. 13. Which type of digestion breaks food into smaller pieces? A) Mechanical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Mechanical. 14. A new substance is formed during which type of change? A) Physical Change. B) Chemical Change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical Change. 15. If Amber mixes baking soda with vinegar, what will happen? A) It will thicken. B) Will not mix together. C) Will bubble and form a gas. D) It will harden and become a solid. Show Answer Correct Answer: C) Will bubble and form a gas. 16. If something rusts, what kind of change has it undergone? A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical. 17. When methane undergoes a chemical reaction with oxygen, carbon dioxide and water are formed as products. Which of the following would be the strongest evidence to show that a chemical reaction has occurred? A) Methane and oxygen have different chemical properties. B) The mass of the reactants is the same as the mass of the products. C) Water is usually part of a mixture. D) Methane has a different boiling point than both carbon dioxide and water. Show Answer Correct Answer: D) Methane has a different boiling point than both carbon dioxide and water. 18. What properties can be changed in a phsycial change? A) Flammibility. B) Shape. C) Size. D) Solubility. Show Answer Correct Answer: B) Shape. 19. What happens to water when cooled to 0 degrees C (or 32 degrees F)? A) It will only get a little cooler?. B) It will only get a little warmer. C) It will boil and change into a gas. D) It will freeze and change into a solid. Show Answer Correct Answer: D) It will freeze and change into a solid. 20. Red color A) Physical property. B) Chemical property. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical property. 21. Bubbles form when water boils. Is this evidence of chemical change? A) Yes, because water is changing. B) Yes, because the water is reacting. C) No, because the vapor is still water. D) No, because water doesn't react with anything. Show Answer Correct Answer: C) No, because the vapor is still water. 22. Rust is chemical A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 23. A chemical change is a change in A) An item's properties such as size, shape, density. B) An item that creates a new substance, releases light or heat. C) An item's sound. D) An item's look or state of matter. Show Answer Correct Answer: B) An item that creates a new substance, releases light or heat. 24. Digestion of food is A) Chemical change. B) Physical change. C) Crystallization. D) Rusting. Show Answer Correct Answer: A) Chemical change. 25. We can prevent rusting of iron to apply a coat of A) Paint. B) Grease. C) Zinc. D) All of the above. Show Answer Correct Answer: D) All of the above. ← 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