Look at the chemical reaction above. For each substance in the reaction, decide if bonds are breaking or forming.

Column A
1.
Cu(OH)2

:
Cu(OH)2

2.
CuSO4

:
CuSO4

3.
NaOH

:
NaOH

4.
Na2SO4

:
Na2SO4

Column B
a.This substance is a reactant in the reaction, so bonds were broken and energy was absorbed.
b.This substance is a product in the reaction, so bonds were formed and energy was released.

Column A

1. Cu(OH)2: bonds are breaking
2. CuSO4: bonds are breaking
3. NaOH: bonds are breaking
4. Na2SO4: bonds are breaking

Column B

a. This substance is a reactant in the reaction, so bonds were broken and energy was absorbed.
a. This substance is a reactant in the reaction, so bonds were broken and energy was absorbed.
a. This substance is a reactant in the reaction, so bonds were broken and energy was absorbed.
a. This substance is a reactant in the reaction, so bonds were broken and energy was absorbed.