This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 5 Physical And Chemical Changes – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 6 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When the temperature of matter decreases the particles ..... A) Speed up and move farther apart. B) Speed up and move closer together. C) Slow down and move farther apart. D) Slow down and move closer together. Show Answer Correct Answer: D) Slow down and move closer together. 2. During a physical change in an object, a change may occur in its A) Size. B) Shape. C) Texture. D) All of these. Show Answer Correct Answer: D) All of these. 3. ..... changes the identity of the substance A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 4. Making a paper airplane A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical. 5. Spray perfume into the air, and when the air and perfume mix, observe the change in odor that happens asthey mix. A) Physical Change. B) Chemical Change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical Change. 6. Does a physical change the substance itself? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 7. The reactants are on the left side of the chemical equation. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 8. A ..... change occurs when a new substance forms A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical. 9. Changes of state in matter are A) Chemical changes. B) Environmental changes. C) Physical changes. D) Not occuring in nature. Show Answer Correct Answer: C) Physical changes. 10. What happens when a piece of wood burns? A) A physical change takes place. B) A chemical change takes place. C) The wood loses its gravity. D) The wood becomes a tree again. Show Answer Correct Answer: B) A chemical change takes place. 11. Burning coal A) Chemical change. B) Physical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical change. 12. The change in which a man cuts down a tree with an axe is an example of A) Chemical change. B) Chemical reaction. C) Physical change. D) Displacement reaction. Show Answer Correct Answer: C) Physical change. 13. Define a Physical Property A) A property of matter that does not change what the object is when you observe it. B) A property in which stops a chemical reaction from occuring. C) A property in which a new substance is created. D) A property which makes the object smell or taste different. Show Answer Correct Answer: A) A property of matter that does not change what the object is when you observe it. 14. A characteristic that can be observed or measured without changing the composition of the substance. A) Physical change. B) Chemical change. C) Chemical Property. D) Physical Property. Show Answer Correct Answer: D) Physical Property. 15. If you run a magnet through a beaker of water, iron filings, and salt mixed together, what will be left behind in the beaker? A) Only water molecules. B) Only salt molecules. C) A solution of water and salt molecules. D) Only the iron filings. Show Answer Correct Answer: C) A solution of water and salt molecules. 16. Which of the following is an example of a chemical change in everyday life? A) Melting butter. B) Dissolving sugar in water. C) Baking bread. D) Cutting vegetables. Show Answer Correct Answer: C) Baking bread. 17. A chemical reaction between Hydrogen and Oxygen produces water. If 2g of Hydrogen and 4g of Oxygen react together, how much water is produced? A) 2g. B) Hgum. C) 6g. D) Not enough information to answer. Show Answer Correct Answer: C) 6g. 18. A teacher is demonstrating physical and chemical changes to her class. Which action should they use to demonstrate a chemical change? A) Cutting a piece of paper with scissors. B) Folding a piece of paper into an airplane. C) Ripping a piece of paper with their hands. D) Burning a piece of paper with a match. Show Answer Correct Answer: D) Burning a piece of paper with a match. 19. Which process is a sign of a chemical change? A) A rotting potato gives off a bad smell. B) A melting block of ice leaves a large puddle. C) A cloud quickly changes shape when blown by the wind. D) A plaster statue breaks when it falls on the floor. Show Answer Correct Answer: A) A rotting potato gives off a bad smell. 20. A change that does not result in a new substance A) Chemical property. B) Chemical change. C) Physical propert. D) Physical change. Show Answer Correct Answer: D) Physical change. 21. What is the role of energy in physical and chemical changes? A) Energy only affects chemical changes, not physical changes. B) Energy is essential for initiating and sustaining physical and chemical changes. C) Energy has no impact on physical and chemical changes. D) Physical and chemical changes can occur without any energy involvement. Show Answer Correct Answer: B) Energy is essential for initiating and sustaining physical and chemical changes. 22. Using a hot plate to heat a solid until it changes color and releases an odor would provide evidence of a chemical change because the particles cannot be changed back. This is what type of change? A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical. 23. Temperature changes can cause a ..... change. A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical. 24. When atoms in reactants are rearranged to form new products, this is a A) Chemical change. B) Physical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical change. 25. Boiling water A) Chemical Change. B) Physical Change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical Change. ← 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 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 10Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books