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 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 5 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. This can be released during a chemical change A) Mixture. B) Change. C) Manipulation. D) Energy. Show Answer Correct Answer: D) Energy. 2. The total amount of matter (atoms) before and after a chemical reaction (change), remains the same. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 3. The ability to rust A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical. 4. State TRUE or FALSE:physical change produces new substances A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 5. Water boils at 100 degrees Celsius A) Physical Change. B) Chemical Change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical Change. 6. What is the formula for density? A) Density = mass / volume. B) Density = mass-volume. C) Density = mass x volume. D) Density = mass + volume. Show Answer Correct Answer: A) Density = mass / volume. 7. What is melting? A) Solid to a liquid. B) Liquid to a solid. C) Gas to a solid. D) Solid to a gas. Show Answer Correct Answer: A) Solid to a liquid. 8. Which of the following best describes the role of stomach acid in digestion? A) It physically breaks down food into smaller pieces. B) It chemically alters food to aid in nutrient absorption. C) It transports food through the digestive tract. D) It provides energy for digestion. Show Answer Correct Answer: B) It chemically alters food to aid in nutrient absorption. 9. Which of the following matches the correct definition to an example? A) Chemical Change:My face turns red when I run. B) Physical Change:My homework burned in a fire. C) Chemical Change:My dog consumed my homework. D) Physical Change:My microwave exploded. Show Answer Correct Answer: C) Chemical Change:My dog consumed my homework. 10. There are more than ..... elements. A) 100. B) 500. C) 10. D) 50. Show Answer Correct Answer: A) 100. 11. Milk sours (goes bad) A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 12. Is a change in state (solid, liquid, or gas) evidence for 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. 13. Change in temperature is the only feature of chemical change. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 14. Filling an ice cube tray with water that freezes and forms ice cubes is a ..... change. A) Physical. B) Chemical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical. 15. Which of these is a physical change? A) Ice Melts. B) Vinegar is mixed with baking soda. C) Mold on bread turns green. D) Cookies bake. Show Answer Correct Answer: A) Ice Melts. 16. Which of the following examples shows that a chemical reaction has occurred? A) A rock breaks into smaller pieces when it is struck with a hammer. B) Rust forms on a hammer that has been left outside to long. C) A cup of water turns pink when a few drops of red food coloring are added. D) A solid is formed when heat is removed from a sample of water. Show Answer Correct Answer: B) Rust forms on a hammer that has been left outside to long. 17. Which of the following processes is a chemical change? A) Breaking glass. B) Burning wood. C) Melting ice. D) Boiling water. Show Answer Correct Answer: B) Burning wood. 18. Which of the two is permanent change chemical change or physical change? A) Physical. B) Chemical. C) All of them. D) None of them. Show Answer Correct Answer: B) Chemical. 19. All matter is made of tiny building blocks called A) Legos. B) Wood. C) Atoms. D) Volume. Show Answer Correct Answer: C) Atoms. 20. What happens when chemical bonds break and new bonds form? A) Surface area increases. B) Matter is destroyed. C) A chemical reaction. D) A physical change. Show Answer Correct Answer: C) A chemical reaction. 21. When a liquid becomes a solid, freezing occurs. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 22. Galvanisation is a process used to prevent the rusting of which of the following? A) Zinc. B) Iron. C) Copper. D) Aluminium. Show Answer Correct Answer: B) Iron. 23. Wood rotting is an example of a ..... A) Chemical Property. B) Physical Change. C) Chemical Change. D) Physical Property. Show Answer Correct Answer: C) Chemical Change. 24. During an experiment, a student observes bubbles forming when two substances are mixed. What does this indicate? A) The substances are dissolving. B) No change is occurring. C) A physical change is occurring. D) A chemical change is occurring. Show Answer Correct Answer: D) A chemical change is occurring. 25. Which of these is a result of a chemical change? A) A mixture. B) Melting or freezing. C) A new substance. D) A solution. Show Answer Correct Answer: C) A new substance. 26. You mix a red liquid and a white solid together. They turn yellow and the temperature increases. This is a ..... A) Physical change. B) Chemical Change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical Change. 27. Heat will continue to transfer between two areas or objects until A) Melting point is reached. B) The colder object absorbs all the heat energy. C) Both objects are the same temperature. D) All heat is lost to the air. Show Answer Correct Answer: C) Both objects are the same temperature. 28. Which is an example of a different substance being formed? A) Glass breaking. B) Water freezing. C) Cutting a paper. D) Baking a cake. Show Answer Correct Answer: D) Baking a cake. 29. A physical change is A) A change where the characteristics do not change the substance. B) A change where the characteristics do change the substance. C) A change where the chemistry changes. D) None of the above. Show Answer Correct Answer: A) A change where the characteristics do not change the substance. 30. Cutting a hard boiled egg A) Physcial change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physcial change. 31. How can you say that ripening of a fruit is a chemical change? A) After it gets ripened we cant get the unripened fruit again. B) After it gets ripened we eat it then we cant get that back. C) After it gets ripened it forms a as a new fruit. D) None of the above. Show Answer Correct Answer: C) After it gets ripened it forms a as a new fruit. 32. Which of these is a chemical property of a sheet of paper? A) The paper does not conduct electricity. B) The paper can be burned. C) The paper does not attract a magnet. D) The paper can be crumpled. Show Answer Correct Answer: B) The paper can be burned. 33. A clear liquid from a flask is poured into another clear liquid in a beaker. Which of the following results of this procedure would indicate a new substance was formed? A) The level of the substance in the beaker is higher after the other liquid is added. B) A yellow solid forms and then settles to the bottom of the beaker. C) Small white crystals are left behind in the flask that held the first liquid. D) None of the above. Show Answer Correct Answer: B) A yellow solid forms and then settles to the bottom of the beaker. 34. Pancakes cook on a griddle A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 35. Which of the following is a Physical Property A) Toxicity. B) Flammability. C) Malleability. D) Reactivity. Show Answer Correct Answer: C) Malleability. 36. Bob claims that ice cubes release heat when they melt. Paula claims that ice cubes absorb heat when they melt. Which statement identifies the correct claim? A) Paula. B) Bob. C) All the above. D) None of the above. Show Answer Correct Answer: A) Paula. 37. When Magnesium ribbon is burnt in oxygen, the product obtained is ..... A) Magnesium oxide. B) Magnesium carbide. C) Magnesium sulphate. D) Magnesium chloride. Show Answer Correct Answer: A) Magnesium oxide. 38. Solubility (dissolves):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. 39. Water is heated and changed to steam A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical change. 40. What happens to water molecules when they are heated up? A) The molecules slow down and spread apart. B) The molecules speed up and stay close together. C) The molecules speed up and spread apart. D) The molecules don't do anything. Show Answer Correct Answer: C) The molecules speed up and spread apart. 41. During chemical digestion A) Only changes in size and shape occur. B) Food is chemically changed by acid, bases and enzymes. C) All the above. D) None of the above. Show Answer Correct Answer: B) Food is chemically changed by acid, bases and enzymes. 42. Plants absorb sunlight during photosynthesis. Hence the process is A) Exothermic. B) Endothermic. C) Physical change. D) None of the above. Show Answer Correct Answer: B) Endothermic. 43. Which of the following tells you that a chemical change has occurred? A) Melting. B) Vaporizing. C) Change Shape. D) Change in color. Show Answer Correct Answer: D) Change in color. 44. In a chemical reaction, the number of atoms in the reactants and the products ..... A) Must be the same. B) Must be different. C) All the above. D) None of the above. Show Answer Correct Answer: A) Must be the same. 45. Why is a mixture a physical change? A) It creates a new substance. B) It has multiple ingredients. C) It can be separated. D) None of the above. Show Answer Correct Answer: C) It can be separated. 46. A solid piece of chocolate is melted and changed to liquid form. Which property of the piece of chocolate will remain the same? A) Mass. B) Temperature. C) Shape. D) Texture. Show Answer Correct Answer: A) Mass. 47. In addition to new products, the following may accompany a chemical change: A) Production of sound. B) Change in temperature. C) Release of a gas. D) All of the above. Show Answer Correct Answer: D) All of the above. 48. State of matter with a fixed shape and volume, molecules are very close together. A) Solid. B) Plasma. C) Liquid. D) Gas. Show Answer Correct Answer: A) Solid. 49. Name the metals involved in making stainless steel. A) Chromium, nickel and manganese. B) Elements, atoms, componds. C) Molecules. D) None of the above. Show Answer Correct Answer: A) Chromium, nickel and manganese. 50. If you put your skittle candy on a plate with water the color will come off. What type of change is this? A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical. 51. TRUE OR FALSE:You can look at matter and observe the chemical properties. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 52. Name the gas which turn lime water into milky A) Carbon dioxide. B) Hydrogen. C) Oxygen. D) Nitrogen. Show Answer Correct Answer: A) Carbon dioxide. 53. Will you weigh the same, more or less on the Moon? A) Less. B) More. C) Same. D) None of the above. Show Answer Correct Answer: A) Less. 54. When an iron bar rusts in the rain why is this a chemical change A) A new substance forms, rust, on the iron. B) Nothing happens. C) The iron becomes salt. D) The iron turns into water. Show Answer Correct Answer: A) A new substance forms, rust, on the iron. 55. Provide an example of a chemical change. A) Burning of wood. B) Mixing salt and water. C) Melting ice. D) Boiling water. Show Answer Correct Answer: A) Burning of wood. 56. Chemical changes can be easily reversed by physical changes. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 57. Flammability (burns):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. 58. A rotting pumpkin A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 59. What is change of matter from a gas to a liquid. A) A. evaporation. B) B. condensation. C) C. freezing. D) None of the above. Show Answer Correct Answer: B) B. condensation. 60. Which of the following options provides evidence of a CHEMICAL change? A) Wood is burned releasing ash and smoke. B) Rocks separate when soil is sifted. C) Water turns to ice when you put it in the freezer. D) Salt dissolves in water. Show Answer Correct Answer: A) Wood is burned releasing ash and smoke. ← 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 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 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books