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 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 7 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Scenario:Milk turns sour. Does a chemical or physical change occur? A) Chemical change. B) Physical change. C) Spiritual change. D) Emotional change. Show Answer Correct Answer: A) Chemical change. 2. Which statement best describes evidence that a chemical reaction occurs as a cake bakes? A) The water in the cake batter is used to keep the cake moist as it bakes. B) The water in the cake batter evaporates. C) The cake rises as gas bubbles form in the baking cake. D) The cake takes the shape of the container in which it is baked. Show Answer Correct Answer: C) The cake rises as gas bubbles form in the baking cake. 3. Is spoiling food (food that is going bad) a physical or chemical change? A) Physical Change. B) Chemical Change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical Change. 4. Molecules are formed when two or more ..... join together. A) Sizes. B) Books. C) Atoms. D) Blocks. Show Answer Correct Answer: C) Atoms. 5. Reacts with Air:Chemical or Physical Property A) Chemical Property. B) Physical Property. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical Property. 6. What is the formula of rust? A) Patch. B) Fe3O4. C) FeO. D) None of these. Show Answer Correct Answer: A) Patch. 7. You know you a chemical reaction has occurred if A) There is a precipitate. B) There is a color change. C) There is a temperature change. D) All of these answers are evidence. Show Answer Correct Answer: D) All of these answers are evidence. 8. When water changes states from liquid to solid to gas it is because of differences or changes in A) Temperature. B) Mixture. C) Reactant. D) Shape. Show Answer Correct Answer: A) Temperature. 9. What is a key characteristic of a physical change? A) Change in color. B) Change in state. C) Formation of a new substance. D) Release of gas. Show Answer Correct Answer: B) Change in state. 10. A plant carries out photosynthesis. A) Endothermic. B) Exothermic. C) All the above. D) None of the above. Show Answer Correct Answer: A) Endothermic. 11. Which of the following examples model physical change during digestion? A) Burning toast. B) Freezing pickle juice to create a Popsicle. C) Grinding food in a blender. D) Cooking an egg with oil. Show Answer Correct Answer: C) Grinding food in a blender. 12. In ..... changes new substances are produced. A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical. 13. Evidence of a chemical reactions is anything that shows- A) A change in the state of matter. B) A solid dissolved in a liquid. C) A new substance has formed. D) Interaction between 2 gases. Show Answer Correct Answer: C) A new substance has formed. 14. Is hammering wood to build a treehouse 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. 15. A chemical reaction accompanied by the releasing of heat. A) Endothermic. B) Misothermic. C) Mesothermic. D) Exothermic. Show Answer Correct Answer: D) Exothermic. 16. What happens to matter during melting? A) Solid turns into liquid. B) Liquid turns into solid. C) All the above. D) None of the above. Show Answer Correct Answer: A) Solid turns into liquid. 17. If it is a hot sunny day and you have a cold glass of water filled with ice cubes. You notice that drops of water form on the outside of the glass. This is called ..... A) A. evaporation. B) B. condensation. C) C. precipitation. D) None of the above. Show Answer Correct Answer: B) B. condensation. 18. Which statement best defines Mechanical Energy? A) Energy that is produced by an electrical current in a circuit. B) Energy that travels in waves due to vibrations. C) Energy produced by a machine or moving part. D) Energy from the sun. Show Answer Correct Answer: C) Energy produced by a machine or moving part. 19. In the context of digestion, which of the following is a chemical change? A) The absorption of water in the large intestine. B) The emulsification of fats by bile. C) The movement of food through the esophagus. D) The grinding of food by teeth. Show Answer Correct Answer: B) The emulsification of fats by bile. 20. Which of the following isn't a chemical change? A) Boiling water. B) Digesting food. C) Baking bread. D) Fireworks. Show Answer Correct Answer: A) Boiling water. 21. A car has the ability to rust A) Physical Property. B) Physical Change. C) Chemical Change. D) Chemical Property. Show Answer Correct Answer: D) Chemical Property. 22. A ..... change produces one or more new substances. A) Physical. B) Liquid. C) Solid. D) Chemical. Show Answer Correct Answer: D) Chemical. 23. Which of the following could indicate that a chemical change took place? A) Change in color. B) Production of Energy. C) Formation of Gas. D) All are correct. Show Answer Correct Answer: D) All are correct. 24. What is the process of a gas changing into a liquid called? A) Sublimation. B) Condensation. C) Evaporation. D) Vaporization. Show Answer Correct Answer: B) Condensation. 25. A new substance is formed in a physical change. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 26. Is a change in shape a chemical or physical change? A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical. 27. Is a a rusting bicycle a chemical or physical change? A) Chemcial. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemcial. 28. Would peristalsis 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. 29. Temperature at which a substance changes from solid to liquid A) Conductivity. B) Boiling Point. C) Hardness. D) Melting Point. Show Answer Correct Answer: D) Melting Point. 30. Which statement best describes why baking a cake is an example of a chemical change? A) The process takes place in an oven. B) The process can be repeated. C) The process requires heat energy. D) The process cannot be reversed. Show Answer Correct Answer: D) The process cannot be reversed. 31. Where does most digestion and absorption occur? A) Stomach. B) Colon. C) Small intestine. D) Esophagus. Show Answer Correct Answer: C) Small intestine. 32. Phase change from a solid to a gas. A) Condensation. B) Sublimation. C) Evaporation. D) Deposition. Show Answer Correct Answer: B) Sublimation. 33. Is spoiling food a physical or chemical change? A) Phyiscal. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical. 34. Identify the characteristics of a chemical change. A) Change in both physical and chemical properties. B) No new products are formed. C) Temporary and reversible. D) Energy change is minimal. Show Answer Correct Answer: A) Change in both physical and chemical properties. 35. Matter that always fills the shape in a container, such as air. A) Solid. B) Liquid. C) Gas. D) None of the above. Show Answer Correct Answer: C) Gas. 36. Weight measures the pull of what on an object? A) Width. B) Height. C) Gravity. D) Length. Show Answer Correct Answer: C) Gravity. 37. Chex mix is an example of a A) Solution. B) Chemical change. C) Mixture. D) None of the above. Show Answer Correct Answer: C) Mixture. 38. The stomach releases hydrochloric acid and enzymes that break down the protein in meats and turn the protein into amino acids. This change is A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical. 39. Rust will most likely occur when it is A) Wet. B) Greasy. C) Dry. D) None of the above. Show Answer Correct Answer: A) Wet. 40. Which of these is NOT a PROPERTY of matter? A) Size. B) Color. C) Shape. D) Quantity. Show Answer Correct Answer: D) Quantity. 41. Density:Chemical or Physical Property A) Chemical Property. B) Physical Property. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical Property. 42. Slicing a pellet of sodium metal into two pieces is an example of a ..... A) Chemical Change. B) Physical Change. C) Physical Property. D) Chemical Property. Show Answer Correct Answer: B) Physical Change. 43. Which action causes a physical change? A) Burning a wood log. B) Baking a cake. C) Rusting metal. D) Cutting a piece of paper in half. Show Answer Correct Answer: D) Cutting a piece of paper in half. 44. Why does a chemical change occur when wood burns and turns into ash? A) The heat from the fire causes the wood to evaporate. B) The wood absorbs water and changes its composition. C) Chemical reaction with oxygen in the air. D) The wood is transformed by the light from the flames. Show Answer Correct Answer: C) Chemical reaction with oxygen in the air. 45. Sodium and chlorine combine in an explosive reaction to form table salt. A) Endothermic. B) Exothermic. C) All the above. D) None of the above. Show Answer Correct Answer: B) Exothermic. 46. A transformation in which new substances with different properties are formed. Example:rusting of iron. A) Decomposition reaction. B) Physical change. C) Chemical change. D) Solubility. Show Answer Correct Answer: C) Chemical change. 47. Substances that change in appearance but not in composition are an example of a ..... change. A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical. 48. Characteristic of Chemical Change. A) Change in State. B) Change in size. C) New Substance. D) Temporary change. Show Answer Correct Answer: C) New Substance. 49. When gases condense and liquids freeze energy is A) Lost. B) Gained. C) Stays the same. D) None of the above. Show Answer Correct Answer: A) Lost. 50. Digesting your food is an example of A) Chemical change. B) Physical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical change. 51. The Best Friend's Club uses "invisible ink" to write notes to each other. The invisible ink is actually lemon juice that is clear when it dries on paper, but turns brown when a club member holds a burning candle under the paper. Once it is heated, it is never invisible again. What type of change is occurring when the paper is heated? A) Physical Change. B) Temperature Change. C) Elemental Change. D) Chemical Change. Show Answer Correct Answer: D) Chemical Change. 52. The ability to hammered into a thin sheet or be bent is A) Ductility. B) Solubility. C) Density. D) Malleability. Show Answer Correct Answer: D) Malleability. 53. During reaction of iron with copper sulphate, the colour of solution A) Changes from green to blue. B) Changes from blue to green. C) Changes from blue to brown. D) Remains unchanged. Show Answer Correct Answer: B) Changes from blue to green. 54. Hardness:Chemical or Physical Property A) Chemical Property. B) Physical Property. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical Property. 55. If you combine two or more substances that each keep their physical properties you create a A) Chemical reaction. B) Reactant. C) Burn it. D) Mixture. Show Answer Correct Answer: D) Mixture. 56. Which of the following processes in digestion is a chemical change? A) Chewing food in the mouth. B) Swallowing food. C) Stomach acid breaking down proteins. D) Food moving through the intestines. Show Answer Correct Answer: C) Stomach acid breaking down proteins. 57. T or F:Physical properties are VISIBLE (can be observed) and can be MEASURED. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 58. A physical change ..... the identity of the substance. A) Changes. B) Maintains. C) All the above. D) None of the above. Show Answer Correct Answer: B) Maintains. 59. Carbon dioxide is what type of pure substance? A) Compound. B) Heterogeneous. C) Element. D) Homeogeneous. Show Answer Correct Answer: A) Compound. 60. If liquid nitrogen is brought to a boil, is this a physical or chemical change? A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical. ← 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 8Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books