This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 5 Physical And Chemical Changes – Quiz 32 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 32 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Definite volume but not definite shape A) Solid. B) Liquid. C) Gas. D) Solid, liquid and gas. Show Answer Correct Answer: B) Liquid. 2. Why is it always advised not to play with fireworks? A) If a flying firework lands on a structure, or stationary object, it can cause a fire. B) Areas that are dry, or worse, in a drought, are especially vunerable. C) All the above. D) None of the above. Show Answer Correct Answer: A) If a flying firework lands on a structure, or stationary object, it can cause a fire. 3. No Definite Shape and No Definite Volume A) Gas. B) Liquid. C) Solid. D) None of the above. Show Answer Correct Answer: A) Gas. 4. A physical change is named as such because ..... A) It involves changes in physical properties of a substance. B) It is accompanied by a transfer of energy. C) It is a reversible process. D) It involves the formation of new products. Show Answer Correct Answer: A) It involves changes in physical properties of a substance. 5. Paper burning and metal rusting are examples of a A) Physical property. B) Chemical property. C) Physical change. D) Chemical change. Show Answer Correct Answer: D) Chemical change. 6. During Photosynthesis energy is absorbed. What kind of reaction is it? A) Physical. B) Exothermic. C) Endothermic. D) Photothermic. Show Answer Correct Answer: C) Endothermic. 7. In a chemical reaction the matter that you start with is called A) Reactant. B) Shape. C) Evaporation. D) Solution. Show Answer Correct Answer: A) Reactant. 8. Fireworks exploding and producing bright colors A) Physcial change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 9. Monica and Andre are investigating the differences between physical andchemical changes.They list their observations below.Physical changesice meltinga burning fireChemical changescrushing a cangas formingcutting paperWhich of the following observations did Monica and Andre label incorrectly? A) Ice melting. B) A burning fire and crushing a can. C) Gas forming. D) Fireworks. Show Answer Correct Answer: B) A burning fire and crushing a can. 10. The chemical name of baking soda is ..... A) Sodium carbonate. B) Sodium Hydrogen carbonate. C) Barium Carbonate. D) Bleaching powder. Show Answer Correct Answer: B) Sodium Hydrogen carbonate. 11. How can energy be transferred from one organism to another? A) The energy stored in the molecules of one organism is transferred to another organism. B) The matter stored in the molecules of one organism is transferred to another organism. C) The photosynthesis stored in the molecules of one organism is transferred to another organism. D) None of the above. Show Answer Correct Answer: A) The energy stored in the molecules of one organism is transferred to another organism. 12. State of matter that attractive forces are too weak to keep molecules close together so they move freely and rapidly. A) Solid. B) LIQUI. C) Gas. D) Plasma. Show Answer Correct Answer: C) Gas. 13. A change in which matter stays the same A) Chemical Change. B) Physical Change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical Change. 14. The ability of matter to conduct electric current or heat A) Solubility. B) Mass. C) Weight. D) Conductivity. Show Answer Correct Answer: D) Conductivity. 15. What instrument would you use to detect an endothermic or exothermic reaction? A) Triple beam balance. B) Ruler. C) Thermometer. D) None of the above. Show Answer Correct Answer: C) Thermometer. 16. What are changes that result in a substance that is chemically different than it started? A) Chemical. B) Physical. C) Acids. D) Bases. Show Answer Correct Answer: A) Chemical. 17. Is sqeezing organges to make orange juice a phyical or chemcial change? A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical. 18. When a liquid changes to a gas, it A) A. evaporates. B) B. condenses. C) C. freezes. D) None of the above. Show Answer Correct Answer: A) A. evaporates. 19. Which observation would best indicate a physical change has occurred? A) Formation of a precipitate. B) Change in temperature. C) Change in color. D) Change in shape. Show Answer Correct Answer: D) Change in shape. 20. An ice cream cone melting is a A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical change. 21. Hydrochloric acid reacts with magnesium to produce hydrogen gass A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 22. Give two examples of chemical changes. A) Boiling water. B) 1. Rusting of iron 2. Burning of wood. C) Freezing water. D) Mixing salt and sugar. Show Answer Correct Answer: B) 1. Rusting of iron 2. Burning of wood. 23. Burning of wick is A) Physical Change. B) Chemical Change. C) None of these. D) None of the above. Show Answer Correct Answer: B) Chemical Change. 24. A liquid and a solid are combined to form a mixture. Which procedure would most likely produce evidence that a chemical change occurs? A) Observe the color both of the liquid and the solid before mixing. B) Measure the volume of the mixture after the components were combined. C) Determine the time it took for the liquids to combine completely. D) Record the temperature of the substances before and after mixing. Show Answer Correct Answer: D) Record the temperature of the substances before and after mixing. 25. Billy forms a clay figure of a frog in art class. Which of the following occurred when Billy created the clay figure? A) He made a new substance from the clay. B) He physically changed the modeling clay. C) He created new atoms in the modeling clay. D) He changed the chemical properties of the clay. Show Answer Correct Answer: B) He physically changed the modeling clay. ← 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