Test - Chemical Reactions

Question 1

14. What two reactions could be considered opposites?

Answer 1

A synthesis reaction and a decomposition reaction

NB pg. 12

Question 2

19. In a chemical equation, numbers often appear in front of a chemical formula. These numbers tell you the….

Answer 2

Number of molecules or atoms of each substance in the equation
NB pg. 3

Question 3

24. Give an example of a balanced chemical equation.

Answer 3

2Fe2O3 + 3C —> 4Fe + 3CO2

NB pg. 10

Question 4

36. What type of reaction is..

2LiCl + Br2 —> 2LiBr + Cl2

Answer 4

Single replacement reaction

NB pg. 3

Question 5

37. What type of reaction is..

2KClO3 —> 2KCl + 3O2

Answer 5

Decomposition

NB pg. 3

Question 6

38. What type of reaction is..

3Ca(OH)2 + 2H3(PO4) -> Ca3(PO4)2 + 6 H(OH)

Answer 6

Double replacement reaction

NB pg. 3

Question 7

39. What type of reaction is..

2N2 + 5O2 —> 2N2O5

Answer 7

Synthesis replacement reaction

NB pg. 3