Name __________________________________________
Elements, Compounds and Evidence of Change
Unit 4 Test Review
Per___
In the list below, identify which are Physical Changes and which are Chemical Changes. Write PC for
Physical Change and CC for Chemical Change. On the line following, JUSTIFY your answer.
_____ 1. Burning Toast ____________________________________________________________________
_____ 2. Glass Breaking _____________________________________________________________________
_____3. Chocolate Melting __________________________________________________________________
_____4. Baking Soda/Vinegar ________________________________________________________________
_____5. Frozen Water ______________________________________________________________________
_____6. Water evaporating __________________________________________________________________
_____7. Burning Wood ______________________________________________________________________
_____8. Baking a Cake _______________________________________________________________________
_____9. Roasting Marshmallow _______________________________________________________________
_____10. Making Lemonade __________________________________________________________________
_____11. Making Putty ______________________________________________________________________
_____12. Mixing Dye and Bleach _______________________________________________________________
_____13. Cutting Grass ______________________________________________________________________
_____14. Fireworks Spoiling __________________________________________________________________
_____15. Calcium Chloride and Water ___________________________________________________________
16. What is a chemical symbol? _______________________________________________________________
17. What are elements? ____________________________________________________________________
Identify the following ELEMENTS and write either their chemical symbol or their chemical name.
18. Carbon __________
19. Na _________________
20. Oxygen _______________
21. Fe _______________
22. Chlorine ______________
23. Al ____________________
24. Nitrogen _________
25. Calcium _______________
26. H _____________________
Name __________________________________________
Elements, Compounds and Evidence of Change
Unit 4 Test Review
Per___
27. What two elements make up most of the human body? __________________ and _________________
28. _____________________ is found in all living things which make them organic.
29. What is a compound? ___________________________________________________________________
Identify the following COMPOUNDS by their symbol or their name.
30. Water _________________
31. NaCl _________________
32. CO ______________________
33. C H O ________________
In the LIST below. . .circle the ELEMENTS:
34. N
CO
Na
Co
NaCl
Fe
What are the rules for writing chemical symbols, which help you to identify whether a chemical formula is
an element or compound?
35. ______________________________________________________________________________________
_________________________________________________________________________________________
_________________________________________________________________________________________
What are FOUR indicators that show EVIDENCE of a possible CHEMICAL CHANGE? Explain each.
36. ______________________________________________________________________________________
37. ______________________________________________________________________________________
38. _______________________________________________________________________________________
39. _______________________________________________________________________________________
40. Explain the difference between a physical and chemical change. ___A physical change_______________
__________________________________________________________________________________________
A chemical change __________________________________________________________________________
__________________________________________________________________________________________