This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 5 Physical And Chemical Changes – Quiz 35 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 35 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What type of change occurs when a substance reacts with an acid? A) Physical change. B) Neither physical nor chemical change. C) Chemical change. D) Both physical and chemical change. Show Answer Correct Answer: C) Chemical change. 2. Which of the following is an example of both a physical and a chemical change? A) Chopping vegetables with a knife. B) Burning a candle. C) Dissolving hot cocoa mix in water. D) Pouring cold water on a hot object. Show Answer Correct Answer: B) Burning a candle. 3. In an endothermic reaction, heat is ..... A) Taken in. B) Given out. C) All the above. D) None of the above. Show Answer Correct Answer: A) Taken in. 4. What kind of properties can only be observed when a substance changes into a different substance? A) Physical properties. B) Chemical properties. C) Liquid properties. D) Real properties. Show Answer Correct Answer: B) Chemical properties. 5. Evidance of a new substance being created includes A) Bubbles. B) Unexpected Color change. C) Unexpected temperature change. D) All of the choices are correct. Show Answer Correct Answer: D) All of the choices are correct. 6. Rotting Fruit (Like a brown banana) A) Physical Change. B) Chemical Change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical Change. 7. Which is not a bi-product of a chemical reactions? A) Bubbles. B) He is. C) Colour change. D) Melting. Show Answer Correct Answer: D) Melting. 8. Which change creates a NEW substance? A) Physical change. B) Chemical Change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical Change. 9. Give an example of a chemical change. A) Melting of ice. B) Mixing of salt and water. C) Burning of wood. D) Cutting a piece of paper. Show Answer Correct Answer: C) Burning of wood. 10. The ability of a substance to dissolve in another substance, usually a liquid like water. Example:You can keep adding salt to water until it reaches a point where it won't dissolve. A) Combustion. B) Solubility. C) Corrosion. D) Decomposition reaction. Show Answer Correct Answer: B) Solubility. 11. Chewing food to break it down into smaller particles represents a ..... change, but the changing of starch into sugars by enzymes in the digestive system represents a ..... change. A) Chemical then Physical. B) Physical then Chemical. C) Both Physical. D) Both Chemical. Show Answer Correct Answer: B) Physical then Chemical. 12. State of matter that has NO definite shape or volume A) Solid. B) Liquid. C) Gas. D) None of the above. Show Answer Correct Answer: C) Gas. 13. In a physical change, the identity of the substance A) Changes. B) Stays the same. C) All the above. D) None of the above. Show Answer Correct Answer: B) Stays the same. 14. Which claim best explains that a chemical change has occurred? A) Vinegar and baking soda mixed together and bubbles formed. B) Ice has formed because a cup of water was placed in the freezer. C) The salt dissolved into the water when it was stirred. D) The window shattered into many pieces when it was hit by a football. Show Answer Correct Answer: A) Vinegar and baking soda mixed together and bubbles formed. 15. Name the product that formed when copper sulphate solution reacts with iron nail. A) Iron. B) Iron sulphate. C) Iron oxide. D) Iron hydroxide. Show Answer Correct Answer: B) Iron sulphate. 16. Why does a physical change occur when cutting a piece of fruit into slices? A) The fruit gains magical powers. B) The shape and size of the fruit are being altered. C) The fruit changes color. D) The fruit becomes radioactive. Show Answer Correct Answer: B) The shape and size of the fruit are being altered. 17. Saliva contains ..... that helps with ..... A) Teeth, mechanical digestion. B) Enzymes, mechanical digestion. C) Enzymes, chemical digestion. D) Teeth, chemical digestion. Show Answer Correct Answer: C) Enzymes, chemical digestion. 18. Which of the following IS a clue that a chemical change has occurred? A) State of matter change. B) Size Change. C) Change in temperature. D) Shape change. Show Answer Correct Answer: C) Change in temperature. 19. Which process is an example of a physical change? A) Cutting Carrots into pieces and mixed in a salad. B) A peanut butter and jelly sandwich being digested. C) Sodium metal and water combining to form a compound and a gas. D) Sodium metal and chlorine gas combined to form table salt. Show Answer Correct Answer: A) Cutting Carrots into pieces and mixed in a salad. 20. Slicing a banana A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: A) Physical change. 21. In an atom, what is the number of protons equal to? A) The number of electrons. B) The number of neutrons. C) The number of molecules. D) The number of nuclei. Show Answer Correct Answer: A) The number of electrons. 22. The ability to digest food A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical. 23. Fireworks explode A) Physical change. B) Chemical change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical change. 24. Matter can not be created nor destroyed:it can only be A) Destroyed a little bit. B) Invisible. C) Transformed, changed. D) None of the above. Show Answer Correct Answer: C) Transformed, changed. 25. ..... is when you observe one or more substances change into one or more new substances. A) Liquid reaction. B) Temperature reaction. C) Physical reaction. D) Chemical reaction. Show Answer Correct Answer: D) Chemical reaction. ← 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