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 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 10 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. During a chemical change new products are formed. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 2. Phase changes in matter are reversible processes. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 3. What change does not change the substance? A) Chemical change. B) Physical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical change. 4. Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is- A) A gas at room temperature. B) Made of two different elements. C) Given off by green plants. D) None of the above. Show Answer Correct Answer: B) Made of two different elements. 5. State of matter that takes the shape of the container it is in, molecules are able to slide past one another. A) Liquid. B) Plasma. C) Gas. D) Solid. Show Answer Correct Answer: A) Liquid. 6. Putting a bunch of fruit into a fruit bowl (fruit salad) A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical. 7. Which of the following is NOT an indicator of chemical changes? A) Dissolving. B) Unexpected color change. C) Gas formation. D) Light production. Show Answer Correct Answer: A) Dissolving. 8. Is hammering wood together to build a house a chemical or physical change? A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical. 9. What does it mean when there is a physical change? A) A new substance has been formed. B) Matter has changed size, shape or form. C) Matter has changed on the molecular level. D) Matter has changed from one substance into another. Show Answer Correct Answer: B) Matter has changed size, shape or form. 10. During a chemical reaction, which of the following is true? A) Mass is not conserved. B) The total mass of the reactants is greater than the total mass of the products. C) The total mass of the reactants is less than the total mass of the products. D) The total mass of the reactants is equal to the total mass of the products. Show Answer Correct Answer: D) The total mass of the reactants is equal to the total mass of the products. 11. What happens to the weight of matter when it undergoes chemical changes? A) It stays the same. B) It increases. C) It decreases. D) None of the above. Show Answer Correct Answer: A) It stays the same. 12. Iron gate if not painted gets rusted due to the presence of mosture and air A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 13. Which of the following is not an indication of chemical change? A) Change in shape. B) Change in odour. C) Change in colour. D) Change in temperature. Show Answer Correct Answer: A) Change in shape. 14. Flammability is a ..... A) Physical Change. B) Chemical Property. C) Chemical Change. D) Physical Property. Show Answer Correct Answer: B) Chemical Property. 15. All of the following are evidences of a chemical change except- A) An odor being given off. B) A change in temperature. C) A change in state of matter. D) The production of a gas. Show Answer Correct Answer: C) A change in state of matter. 16. Which of the following examples is a physical change but NOT a change of state of matter? A) Logs burning. B) Water freezing into ice cubes. C) Candle wax melting. D) Paper being cut. Show Answer Correct Answer: D) Paper being cut. 17. The change in state from a solid to a liquid is called melting. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 18. Which of these choices describes a chemical property? A) Flexibility. B) Electrical conductivity. C) Reactivity with water. D) Boiling point. Show Answer Correct Answer: C) Reactivity with water. 19. Which of the following indicates a chemical change? A) Change in state of matter. B) Temperature change. C) Change in shape. D) Inflating a balloon. Show Answer Correct Answer: B) Temperature change. 20. Which of the following is evidence of a physical change? A) Shape change. B) New substance. C) Light produced. D) Gas released. Show Answer Correct Answer: A) Shape change. 21. Stainless steel is made by mixing iron with carbon and metals like ..... A) Chromium. B) Nickel. C) Manganese. D) All of the above. Show Answer Correct Answer: D) All of the above. 22. A change is a chemical change when it is accompanied by: A) Energy change. B) Formation of new substances. C) Change in chemical properties. D) ALL OF THE ABOVE. Show Answer Correct Answer: D) ALL OF THE ABOVE. 23. When baking a cake, the process of mixing the ingredients and heating them in an oven A) Changes the physical properties of the mixture, but does not create a new substance. B) Creates a new substance and cannot be undone. C) All the above. D) None of the above. Show Answer Correct Answer: B) Creates a new substance and cannot be undone. 24. In which of the following actions does a physical change occur to separate a mixture? A) Stirring chocolate syrup into milk. B) Evaporating water from salt water. C) Freezing a solution of water and sugar. D) Adding sand to a beaker of water. Show Answer Correct Answer: B) Evaporating water from salt water. 25. When molecules are barely moving and all stuck in one spot, they are what? A) Solid. B) Liquid. C) Gas. D) None of the above. Show Answer Correct Answer: A) Solid. 26. Which example best illustrates a physical change? A) Iron rusting. B) Charcoal burning. C) An ice cube melting. D) A marshmallow burning. Show Answer Correct Answer: C) An ice cube melting. 27. If you dissolve Kool-Aid crystals in water and then boil the water until it evaporates, ..... will be left behind. A) Nothing. B) Kool-Aid crystals. C) All the above. D) None of the above. Show Answer Correct Answer: B) Kool-Aid crystals. 28. Spoiling food is an example of: A) Chemical change. B) Physical change. C) No change. D) None of the above. Show Answer Correct Answer: A) Chemical change. 29. Both physical and chemical changes affect matter, but physical changes are ..... and chemical changes are ..... A) Irreversible, reversible. B) Reversible, irreversible. C) Permanent, reversible. D) Irreversible, permanent. Show Answer Correct Answer: B) Reversible, irreversible. 30. A chemical change is different than a physical change because in a chemical change A) Chemicals are used. B) Molecules do not physically touch. C) A new substance is formed and in a physical change no new substance is formed. D) The change can be seen but in a physical change it cannot. Show Answer Correct Answer: C) A new substance is formed and in a physical change no new substance is formed. 31. Rusting occurs when iron comes in contact with A) Only moisture/water. B) Only oxygen from air. C) Both oxygen and moisture/water. D) Neither oxygen nor water. Show Answer Correct Answer: C) Both oxygen and moisture/water. 32. The process by which we can obtain large crystals of pure substances from their solutions A) Galvanization. B) Rusting. C) Crystallisation. D) Photosynthesis. Show Answer Correct Answer: C) Crystallisation. 33. Identify the correct answer. To prepare dosa batter, rice and dal should be soaked for 4 hours and grinde it.Above process is A) Physical change and Reversible. B) Physical change and Irreversible. C) Chemical change and Reversible. D) Chemical change and Irreversible. Show Answer Correct Answer: B) Physical change and Irreversible. 34. Which of the following is/are true when milk changes to curd?(i) Its state is changed from liquid to semi solid(ii) It changes color(iii) It changes taste(iv) The change cannot be reversed. Choose the correct option from the ones given below: A) (i) and (ii) are correct. B) (ii) and (iii) are correct. C) (i), (iii) and (iv) are correct. D) All are correct. Show Answer Correct Answer: C) (i), (iii) and (iv) are correct. 35. The contractions that push food down your oesophagus are known as? A) Chemical Digestion. B) Peristalsis. C) Mucus. D) Flexion. Show Answer Correct Answer: B) Peristalsis. 36. What kind of properties can only be observed when a substance changes into a new substance? A) Liquid properties. B) Physical properties. C) Real properties. D) Chemical properties. Show Answer Correct Answer: D) Chemical properties. 37. Which is not a sign that a chemical reaction has occurred. A) Production of an odor or smell. B) Bubbling. C) A change in mass. D) Change in color. Show Answer Correct Answer: C) A change in mass. 38. Hydrogen and sulfur are combined in a chemical reaction. The product is A) Sold by the Property Brothers. B) A new substance with different properties. C) Without any properties. D) A substance that looks different but has the same properties. Show Answer Correct Answer: B) A new substance with different properties. 39. A substance that reacts with another during a chemical reaction A) Reactant. B) Combustion. C) Activation energy. D) Amino acid. Show Answer Correct Answer: A) Reactant. 40. Which is a physical change? A) Freezing water. B) Burning wood. C) Rusty nail. D) Baking cookies. Show Answer Correct Answer: A) Freezing water. 41. A bicycle rusting in the rain is a A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 42. Melting is a chemical change A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 43. During ..... , ..... convert radiant energy into the chemical energy in sugar molecules. A) Chemosynthesis, consumers. B) Chemosynthesis, producers. C) Photosynthesis, producers. D) None of the above. Show Answer Correct Answer: C) Photosynthesis, producers. 44. During an experiment, a student mixes two clear liquids and observes a color change. What type of change does this indicate? A) State change. B) Chemical change. C) Physical change. D) No change. Show Answer Correct Answer: B) Chemical change. 45. What will happen to water puddles outside if the temperature continues to go up throughout the day? A) The gas will melt into liquid water. B) The liquid water will evaporate into a gas. C) The solid will harden into a gas. D) The liquid water will freeze into a solid. Show Answer Correct Answer: B) The liquid water will evaporate into a gas. 46. The best way to separate a mixture of salt and water is by A) Burn it. B) Shape. C) Evaporation. D) Chemical change. Show Answer Correct Answer: C) Evaporation. 47. The temperature at which a liquid changes to a gas is the ..... A) Condensation. B) Boiling point. C) Melting. D) Freezing. Show Answer Correct Answer: B) Boiling point. 48. Particles move quickest A) Solid. B) Liquid. C) Gas. D) Solid, liquid and gas. Show Answer Correct Answer: C) Gas. 49. The ability to melt A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical. 50. Can react with vinegar A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical. 51. What is the boiling point of water on the Farenheit scale? A) 100 degrees. B) 0 degrees. C) 212 degrees. D) 32 degrees. Show Answer Correct Answer: C) 212 degrees. 52. Which of the following describes a chemical property of matter? A) Acid rain reacts with rocks. B) Ice melts in the sunlight. C) Food is chewed by teeth. D) Sediment moves in streams. E) Sugar dissolves in water. Show Answer Correct Answer: A) Acid rain reacts with rocks. 53. A green powder is heated and a gas is liberated while it turns to a black solid. This describes A) Change in Temperature. B) Chemical Change. C) Physical Change. D) Change in State. Show Answer Correct Answer: B) Chemical Change. 54. 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. 55. A change in chemical structure, resulting in a new substance A) Chemical Change. B) Reactants. C) Chemical Reaction. D) Products. Show Answer Correct Answer: A) Chemical Change. 56. A change in which NEW substances are formed. A) Casual change. B) Chemical change. C) Physical change. D) Formal change. Show Answer Correct Answer: B) Chemical change. 57. 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. 58. 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. 59. 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. 60. 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. ← 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books