Experiment #1:
Before:
After:
This reaction was a synthesis reaction. The Iron was initially grey, but became darker and created sparks when held over the flame.
Experiment #2:
Before:
After:
This was a combustion reaction. The flame had a teal colour.
Experiment #3:
Before:
After:
This was a decomposition reaction. At first, the liquid was clear, but it then turned yellow, and turned into a gas.
Experiment #4:
Before:
After:
This was a single replacement reaction. The copper wire turned black after the silver nitrate was applied.
Experiment #5:
Before:
After:
This was a double replacement reaction. The Lead (II) Nitrate turned into a yellow liquid when the Potassium Iodide was added.
Experiment #6:
Before (Sodium Hydroxide, blue litmus paper):
Before (Sodium Hydroxide, red litmus paper):
Before (Sulphuric acid, blue litmus paper):
Before (Sulphuric acid, red litmus paper):
After (both, blue litmus paper):
After (both, red litmus paper):
This was an acid-base reaction. Both pieces of litmus paper appeared to be blue after they were put in the liquids.