Complete the following reaction:

Reaction: 1
+

Complete the following reaction:

Reaction: 2
+ +

Complete the following reaction:

Reaction: 3
+ +

Complete the following reaction:

Reaction: 4
+

Visible Change: orange-red green-blue

Complete the following reaction:

Reaction: 5
+ +

Complete the following reaction:

Reaction: 6
+ + + +

Complete the following reaction:

Reaction: 7
+ + + + + +

Complete the following reaction:

Reaction: 8


Complete the following reaction:

Reaction: 9
+

Visible Change: orange-red green-blue

Complete the following reaction:

Reaction: 10
+ +

Complete the following reaction:

Reaction: 11
+ +

Complete the following reaction:

Reaction: 12
+

Complete the following reaction:

Reaction: 13
+ +

Complete the following reaction:

Reaction: 14
+ + +

Visible Change: clear Silver Mirror

Complete the following reaction:

Reaction: 15
+ + + +

Visible Change: clear blue brick-red ppt

Complete the following reaction:

Reaction: 16
+ +

Complete the following reaction:

Reaction: 17
+

Complete the following reaction:

Reaction: 18
+

Balance: (2,9,6,8)

Complete the following reaction:

Reaction: 19
+

Balance: (1,4,3,3)

Complete the following reaction:

Reaction: 20
+