This quiz works best with JavaScript enabled. Home > Class 7 > Class 7 Science Chapter 5 Physical And Chemical Changes – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 7 Science Chapter 5 Physical And Chemical Changes Quiz 11 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the gas form of water called? A) Oxygen. B) Water vapor. C) Gas. D) Liquid. Show Answer Correct Answer: B) Water vapor. 2. What is the definition of chemical change? A) Any change that results in the formation of one (or more) new chemical substance(s). B) Changing of only the appearance of the object. C) Matter cannot be created or destroyed, only change form. D) Changes affecting the form of a chemical substance, but not its chemical composition. Show Answer Correct Answer: A) Any change that results in the formation of one (or more) new chemical substance(s). 3. Which is an example of physical change in digestion? A) Saliva breaking down food. B) Water absorbed in large intestines. C) Acids in the stomach being broken down. D) None of the above. Show Answer Correct Answer: B) Water absorbed in large intestines. 4. When solids become liquids and liquids become gases energy is A) Gained. B) Lost. C) Stays the same. D) None of the above. Show Answer Correct Answer: A) Gained. 5. Melting is the process of a liquid turning to a solid. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 6. A student mixes yellow powder with water. Which observation would prove a CHEMICAL change occurred? A) The powder DISSOLVED in the water. B) The water's TEMPERATURE changed. C) All the above. D) None of the above. Show Answer Correct Answer: B) The water's TEMPERATURE changed. 7. Which of the following describes using a physical change to separate a mixture? A) Heating water to be able to dissolve more sugar in it. B) Adding vinegar to baking soda to produce bubbles from a gas. C) Melting a chocolate bar with almonds to remove the almonds. D) Burning wood to produce thermal energy to cook food. Show Answer Correct Answer: C) Melting a chocolate bar with almonds to remove the almonds. 8. This can be released during a chemical change A) Energy. B) Manipulation. C) Mixture. D) Change. Show Answer Correct Answer: A) Energy. 9. What is a chemical change? A) A change where no new substance is formed but its color and shape is changed. B) A change where a new substance is formed and it loses its original property. C) A change where a new substance is formed but it partially loses its orignal property. D) None of the above. Show Answer Correct Answer: B) A change where a new substance is formed and it loses its original property. 10. 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. 11. The ability to rust A) Chemical. B) Physical. C) All the above. D) None of the above. Show Answer Correct Answer: A) Chemical. 12. 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. 13. 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. 14. What is the formula for density? A) Density = mass x volume. B) Density = mass / volume. C) Density = mass + volume. D) Density = mass-volume. Show Answer Correct Answer: B) Density = mass / volume. 15. What is melting? A) Solid to a gas. B) Gas to a solid. C) Liquid to a solid. D) Solid to a liquid. Show Answer Correct Answer: D) Solid to a liquid. 16. 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. 17. 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 microwave exploded. C) Chemical Change:My dog consumed my homework. D) Physical Change:My homework burned in a fire. Show Answer Correct Answer: C) Chemical Change:My dog consumed my homework. 18. There are more than ..... elements. A) 50. B) 100. C) 500. D) 10. Show Answer Correct Answer: B) 100. 19. Which of the following is a example of physical change? A) Burning of wood. B) Photosynthesis. C) Melting of ice-cream. D) Ripening of fruit. Show Answer Correct Answer: C) Melting of ice-cream. 20. 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. 21. 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. 22. 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. 23. 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. 24. Which of these is a physical change? A) Mold on bread turns green. B) Vinegar is mixed with baking soda. C) Cookies bake. D) Ice Melts. Show Answer Correct Answer: D) Ice Melts. 25. 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. ← 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