This quiz works best with JavaScript enabled. Home > Cbse > Class 7 > Science > Physical And Chemical Changes > Class 7 Science Chapter 5 Physical And Chemical Changes – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 8 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. One of the following is not a chemical change. This one is A) Decaying of jute bag. B) Souring of milk. C) Ripening of bananas. D) Drying of cotton cloth. Show Answer Correct Answer: D) Drying of cotton cloth. 2. A change in the shape of an object is an example of ..... A) A physical change. B) A chemical change. C) An endothermic change. D) Energy. Show Answer Correct Answer: A) A physical change. 3. A change where a complex substance breaks down into simpler substances. Example:Baking soda breaks down into water, carbon dioxide, and other substances, when exposed to heat or an acid. A) Solubility. B) Physical change. C) Chemical change. D) Decomposition reaction. Show Answer Correct Answer: D) Decomposition reaction. 4. Chewing and tearing apart food into smaller pieces is ..... A) Physical/mechanical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical/mechanical. 5. Matter goes through a change resulting in a change in form. What type of change is most likely occurring? A) Acids. B) Chemical. C) Bases. D) Physical. Show Answer Correct Answer: D) Physical. 6. A change from liquid to gas is a: A) Chemical substance. B) Mixture. C) Chemical change. D) Physical change. Show Answer Correct Answer: D) Physical change. 7. Which of these is NOT$^{}$ a sign that a chemical change has occurred? A) An unexpected color change. B) The formation of a precipitate. C) A temperature change. D) A loss of transparency. Show Answer Correct Answer: D) A loss of transparency. 8. Cutting your hair is an example of a ..... change. A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical. 9. What happens when water is heated on a stove? A) It starts to freeze and the liquid turns to gas. B) It starts to freeze and the liquid turns to solid. C) It starts to boil and the liquid evaporates to a gas. D) It starts to boil and the liquid starts to condense into a solid. Show Answer Correct Answer: C) It starts to boil and the liquid evaporates to a gas. 10. Which of the following is an example of a chemical change in digestion? A) Teeth grinding down a burger. B) Peristalsis pushing food in the esophagus. C) Large intestine absorbing water. D) Enzymes in saliva breaking down food. Show Answer Correct Answer: D) Enzymes in saliva breaking down food. 11. Which example is not a physical change? A) Peel bananas. B) Separate five bananas from the bunch. C) Bananas turn brown. D) Cut bananas. Show Answer Correct Answer: C) Bananas turn brown. 12. The best way to separate a mixture of water and pepper is by A) Use a magnet. B) Physical change. C) Temperature. D) Using a filter. Show Answer Correct Answer: D) Using a filter. 13. You tear home your homework into little pieces. How much does the homework weigh after you tear it up? A) A little less. B) A little more. C) The same. D) None of the above. Show Answer Correct Answer: C) The same. 14. Which of the following is a sign of a chemical change? A) A foul smell coming from a mixture. B) A change in the substance's state of matter. C) Water evaporating into steam. D) Ice melting into water. Show Answer Correct Answer: A) A foul smell coming from a mixture. 15. What is an example of a chemical change that happens inside your body? A) Food being broken down by enzymes in your stomach. B) Food being broken into small pieces by your teeth. C) Food being moved from your esophagus into your stomach. D) Water being absorbed inside your large intestine. Show Answer Correct Answer: A) Food being broken down by enzymes in your stomach. 16. Which of the digestive process is a both a physical and chemical change. May be more than one answer. A) Chewing and mixing food with saliva. B) Movement of food through peristalsis. C) Reaction of food with hydrochloric acid. D) Interaction of food with bile. Show Answer Correct Answer: A) Chewing and mixing food with saliva. 17. FILL IN THE BLANK:Removing heat from liquid water will cause the movement of the molecules to ..... , forming a ..... A) Decrease; liquid. B) Increase; solid. C) Decrease; solid. D) Increase; liquid. Show Answer Correct Answer: C) Decrease; solid. 18. What is anything that has mass and takes up space? A) Substance. B) Matter. C) Chemistry. D) Property. Show Answer Correct Answer: B) Matter. 19. A melting popsicle is an example of a ..... A) No change. B) Chemical change. C) Physical change. D) Both a chemical and physical change. Show Answer Correct Answer: C) Physical change. 20. Pure salt can be obtained from sea water by the process of: A) Neutralization. B) Boiling. C) Evaporation. D) Evaporation and crystallization. Show Answer Correct Answer: D) Evaporation and crystallization. 21. If enough heat it taken away or removed from a container of water, what will happen to the water? A) It will increase in weight. B) It will begin to boil. C) It will turn into a gas. D) It will become a solid. Show Answer Correct Answer: D) It will become a solid. 22. The particles in a ..... are the farthest apart and move the fastest. A) Banana. B) Gas. C) Solid. D) Liquid. Show Answer Correct Answer: B) Gas. 23. The following are examples of evidence of a chemical reaction ..... A) Change in color, production of gas bubbles. B) Condensation. C) Endothermic reaction. D) Ice melting into a liquid. Show Answer Correct Answer: A) Change in color, production of gas bubbles. 24. Two methods by which rusting of iron can be prevented? A) Painting and galvanisation. B) Painting and washing. C) Galvanisation and washing. D) Washing and cleaning. Show Answer Correct Answer: A) Painting and galvanisation. 25. Chemical or Physical change?Mowing or cutting the grass A) Chamical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical. 26. An egg can be cooked is a A) Physical change. B) Chemical property. C) Physical property. D) Chemical change. Show Answer Correct Answer: B) Chemical property. 27. When one or more substances combine to make something new A) Chemical change. B) Physcial change. C) Chemical property. D) Mixture. Show Answer Correct Answer: A) Chemical change. 28. Which of the following observations indicates a chemical change has occurred? A) A solid melts into a liquid. B) A liquid evaporates into a gas. C) A gas condenses into a liquid. D) A color change occurs without external influence. Show Answer Correct Answer: D) A color change occurs without external influence. 29. Complete the equation:Magnesium+ Oxygen $\rightarrow$ ..... A) Magnesium. B) Magnesium hydroxide. C) Carbon dioxide. D) Magnesium oxide. Show Answer Correct Answer: D) Magnesium oxide. 30. Which of the following is NOT a characteristic of a physical property? A) Can be observed with senses. B) Changes matter into a new substance. C) Can be determined without destroying matter. D) Includes properties like color and hardness. Show Answer Correct Answer: B) Changes matter into a new substance. 31. What are the two types of mixtures? A) Elements and compounds. B) Elements and pure substances. C) Homogeneous and Heterogeneous. D) Solutes and solvents. Show Answer Correct Answer: C) Homogeneous and Heterogeneous. 32. Mixing lemon and baking soda A) Physical Change. B) Chemical Change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical Change. 33. Salt water is an example of a A) Element. B) Compound. C) Homogeneous mixture. D) Heterogeneous mixture. Show Answer Correct Answer: C) Homogeneous mixture. 34. When a black powder called soot forms around a fireplace after a fire, what process has occurred? A) A chemical reaction occurred when the wood burned forming a new substance called soot. B) The wood evaporated and made a new substance called soot. C) Some bricks in the fireplace melted and made a new substance called soot. D) None of the above. Show Answer Correct Answer: A) A chemical reaction occurred when the wood burned forming a new substance called soot. 35. During a phase change, the temperature A) Fluctuates. B) Increases. C) Stays the same. D) Decreases. Show Answer Correct Answer: C) Stays the same. 36. Would the action churning in the stomach be considered a physical or chemical change? A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical change. 37. Splitting a chocolate bar A) Chemical changes. B) Physical changes. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical changes. 38. You combine 2g of vinegar and 4 g of baking soda in a zip lock bag. The weight of all contents and the bag before the reaction is 7.2 g. What should it weigh after the reaction? A) Less than 6 g. B) 6 g. C) Somewhere between 6 & 7.2 g. D) 7.2 g. Show Answer Correct Answer: D) 7.2 g. 39. A student makes a list of changes observed. 1. water freezing 2. milk curdling 3. iron rusting 4. butter meltingWhich choice correctly classifies the changes observed? A) Physical change 1 and 2chemical change 3 and 4. B) Physical change 1 and 4chemical change 2 and 3. C) Physical change 1 and 3chemical change 2 and 4. D) Physical change 3 and 4chemical change 1 and 2. Show Answer Correct Answer: B) Physical change 1 and 4chemical change 2 and 3. 40. Pooja took a candle in a vessel and heated the vessel. Even though the candle did not burn, it changed its shape and state. What kind of change is this? A) Physical change. B) Permanent change. C) Irreversible change. D) Chemical change. Show Answer Correct Answer: A) Physical change. 41. Nelson put water in a paper cup and weighed it. Then he put the paper cup in the freezer. The water froze. He took the cup out of the freezer and weighed it again. What was the weight after the water froze. A) It is unpredictable. B) It was less. C) It was the same. D) It was more. Show Answer Correct Answer: C) It was the same. 42. What kind of change occurs if matter changes in amount, size, or shape? A) Chemical change. B) Physical change. C) Substance change. D) Elemental change. Show Answer Correct Answer: B) Physical change. 43. Which of the following are examples of a physical change in matter? A) Burning wood. B) Fireworks exploding. C) Baking soda reacting with vinegar. D) Cutting paper. Show Answer Correct Answer: D) Cutting paper. 44. Is squeezing oranges to make orange juice a physical or chemical change? A) Physical Change. B) Chemical Change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical Change. 45. What type of change is formation of manure? A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 46. The starting materials in a chemical reaction A) Enders. B) Starters. C) Products. D) Reactants. Show Answer Correct Answer: D) Reactants. 47. In ..... change no new substance is formed. A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical change. 48. Burning a piece of paper is an example of a A) Physical Change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 49. Sound may be produced during a chemical reaction yes or no? A) YES. B) NO. C) All the above. D) None of the above. Show Answer Correct Answer: A) YES. 50. Chemical change is A) Neither temporary or permanent. B) Temporary. C) Permanent. D) Either temporary or permanent. Show Answer Correct Answer: C) Permanent. 51. Gastric juices in the stomach digest food into a thick liquid. This is ..... A) Mechanical digestion. B) Chemical digestion. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical digestion. 52. If you ..... paper, it will result in a chemical change A) Fold. B) Rip. C) Color on. D) Burn. Show Answer Correct Answer: D) Burn. 53. Fermentation is a A) Physical Change. B) Chemical Change. C) Both physical and chemical change. D) None of above. Show Answer Correct Answer: B) Chemical Change. 54. Which answer shows all four signs of a chemical change? A) A gas forms, ripping, a an precipitate forms, unexpected color change. B) A gas forms, a precipitate forms, an unexpected color change, and light or energy is released. C) A gas forms, an unexpected color change, light or energy is released, and melting or freezing. D) A precipitate forms, an unexpected color change, melting or freezing, and ripping. Show Answer Correct Answer: B) A gas forms, a precipitate forms, an unexpected color change, and light or energy is released. 55. A physical change is generally A) Reversible. B) Irreversible. C) Considerable. D) All of these. Show Answer Correct Answer: A) Reversible. 56. Mom puts a pot of water on the stove and the water begins to boil. A) Endothermic. B) Exothermic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Endothermic. 57. Expansion on heating and contraction on cooling of metals are examples of ..... A) Physical changes. B) Permanent changes. C) Chemical changes. D) Irreversible changes. Show Answer Correct Answer: A) Physical changes. 58. Which is evidence of a physical change? A) Smoke is produced. B) The matter changes its shape. C) A flame forms when mixing matter together. D) The mixed liquids start to bubble and and fizz. Show Answer Correct Answer: B) The matter changes its shape. 59. When the temperature of the water reaches ..... , the water boils, or forms bubbles of gas. A) A. 0$^\circ$C. B) B. 100$^\circ$C. C) C. 50$^\circ$C. D) None of the above. Show Answer Correct Answer: B) B. 100$^\circ$C. 60. The gradual breaking down or discoloration of materials due to chemical reactions with the environment. A) Decomposition reaction. B) Solubility. C) Corrosion. D) Combustion. Show Answer Correct Answer: C) Corrosion. ← PreviousNext →Related QuizzesScience QuizzesClass 7 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books