This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 5 Physical And Chemical Changes – Quiz 27 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 27 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A mixture of sand and gravel can be separated by putting it in a container with holes that only the sand can pass through. This method works to separate the mixture because sand and gravel differ in which physical property? A) Texture. B) State of matter. C) Color. D) Size. Show Answer Correct Answer: D) Size. 2. Which property describes how a material changes into other materials? A) Physical. B) Chemical. C) Height. D) None of the above. Show Answer Correct Answer: B) Chemical. 3. Olivia had a beaker with a small amount of baking soda. She added a few drops of vinegar to the baking soda and observed fizzing and bubbling. Based on her observation, which of these can Vanessa determine about the new substance formed by mixing the baking soda and vinegar? A) It was hot. B) It was a gas. C) It was magnetic. D) It was a conductor. Show Answer Correct Answer: B) It was a gas. 4. An example of a physical property would be? A) Rust on a nail. B) Salt dissolved in water. C) Wood burning. D) An egg frying. Show Answer Correct Answer: B) Salt dissolved in water. 5. Taking a HUGE bite out of your favorite food and chewing it is ..... A) Chemical change. B) Physical change. C) Mechanical digestion. D) Chemical digestion. Show Answer Correct Answer: C) Mechanical digestion. 6. Which is an example of physical property? A) Color. B) Flammability. C) Reactivity. D) Toxicity. Show Answer Correct Answer: A) Color. 7. A pellet of sodium is sliced in two A) Chemical change. B) Physical Change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical Change. 8. If you mix 1 gram of salt with 50 grams of water, how many grams of matter will you have after the salt is completely dissolved? A) 49 grams. B) 50 grams. C) 51 grams. D) None of the above. Show Answer Correct Answer: C) 51 grams. 9. Salt dissolves in water A) Physical Change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical Change. 10. Which property can be measured without changing the material? A) Physical. B) Chemical. C) Height. D) None of the above. Show Answer Correct Answer: A) Physical. 11. Rust on an iron fence A) Chemical Change. B) Physical Change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical Change. 12. When one substance is dissolved into another and they are mixed evenly you create a A) Mixture. B) Solution. C) Temperature. D) Product. Show Answer Correct Answer: B) Solution. 13. Melting point A) Physical property. B) Chemical property. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical property. 14. Rust on an iron bar is an example of chemical change. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 15. Evidence of a physical change A) Burning. B) Fizzing. C) Change in state of matter. D) None of the above. Show Answer Correct Answer: C) Change in state of matter. 16. Put an antacid tablet in water, and when the antacid and water mix, observe the bubbles that form as a new substance is created. A) Physical Change. B) Chemical Change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical Change. 17. Why does a physical change occur when ice melts into water? A) The ice absorbs heat from the surroundings, causing it to change into water. B) The molecules in the solid ice rearrange themselves into the liquid state without changing their chemical composition. C) The chemical composition of the ice changes, leading to the formation of water. D) The temperature of the ice increases, causing it to change into water. Show Answer Correct Answer: B) The molecules in the solid ice rearrange themselves into the liquid state without changing their chemical composition. 18. A ..... results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. A) Amino acid. B) Chemical change. C) Physical change. D) Combustion. Show Answer Correct Answer: B) Chemical change. 19. A change that results in the formation of new chemical substances A) Chemical change. B) Physical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical change. 20. The ability to evaporate A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical. 21. Cutting a tree limb into logs is (a) ..... and burning them in the fireplace is (b) ..... A) A Physical Change(b) Also a Physical Change. B) A Physical Change(b) A Chemical Change. C) A Chemical Change(b) Also a Chemical Change. D) A Chemical Change(b) A Physical Change. Show Answer Correct Answer: B) A Physical Change(b) A Chemical Change. 22. What is an example of a physical change that occurs during digestion? A) Digestive enzymes in the stomach break down proteins into amino acids. B) Saliva in the mouth converts starches into simple sugars. C) Pancreatic enzymes break down fats into fatty acids. D) Teeth grind and tear food into smaller pieces in the mouth. E) Stomach acid breaks down food into chyme. Show Answer Correct Answer: D) Teeth grind and tear food into smaller pieces in the mouth. 23. Read the statement:Combining two liquids that give off heat and gas would provide evidence of a chemical change because the particles react to make a new material with different properties.What evidence let's you know a chemical change has occurred? A) Mixture of substances. B) Temperature change. C) Gas evaporation. D) None of the above. Show Answer Correct Answer: B) Temperature change. 24. Freezing is the process of a liquid becoming a solid. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 25. When you crumple a piece of paper, it's a ..... change. A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical. ← 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