2. 1. In chemistry, most energy is in the form of: A. heat B. fire C. matter D. both A and B

3. 2. Elements can be identified because each type has a unique: A. weight B. color C. smell D. taste

4. 3. Which type of change does NOT create a new substance? A. physical B. chemical

5. 4. The ability to do work or cause change is: A. work B. energy C. heat D. fire

6. 5. A combination of matter that forms a new substance and cannot be separated again is a: A. compound B. mixture C. element D. atom

7. 6. Which of the following is an example of a physical change? A. paper burning B. bubbling/fizzing C. tearing paper D. color change

8. 7. Which of the following could change when a new compound is formed? A. color B. taste C. smell D. all of the above

9. 8.Salt (NaCl) is an example of what type of matter? A. compound B. mixture C. element D. all of the above

10. 9. What type of matter is a bowl of Lucky Charms cereal? A. element B. mixture C. compound

11. 10. Which of the following is NOT made of CHON? A. cow B. vegetables C. metal D. people

12. 11. Which of the following is an example of a chemical change? A. breaking chocolate B. stretching silly putty C. crumpling paper D. burning wood

13. 12. A combination of matter that can be separated back apart is a: A. compound B. mixture C. element D. atom

14. 13. What type of matter is gold? A. compound B. mixture C. element D. all of the above

15. 14. People, food, animals, and many other things on Earth are made of what elements? A. Gold and Silver B. Sodium and Chlorine C. Carbon, Hydrogen, Oxygen, and Nitrogen D. None of the above

16. 15. A mailbox rusting is an example of what type of change? A. physical B. chemical

17. 16.Anything that has _____ and takes _______ is called matter. A. shape, space B. mass, space C. space, volume D. color, mass

18. 17. The smallest unit of matter is: A. an element B. an atom C. matter D. gold

19. 18. A snowman melting is an example of what type of change? A. physical B. chemical

20. 19. The material that everything on Earth is made of is called: A. weight B. volume C. matter D. mass

21. 20. What type of matter is vegetable oil? A. element B. mixture C. compound

22. 21.____________ is the study of matter and the changes matter can undergo. a. Physics b. Metrics c. Chemistry d. All of the above

23. 22. Which of the following is NOT and example of a CHEMICAL CHANGE? a. Compounds may be broken down into elements. b. Elements may combine to form compounds. c. Compounds may change from one state of matter to another. d. Compounds may change into other compounds.

24. 23. Describe 2 differences between COMPOUNDS and MIXTURES.

25. 24. Name 3 signs of a CHEMICAL CHANGE.

26. 25. Name 3 signs of a PHYSICAL CHANGE.