Reaction Type: Synthesis
The iron changed it’s colour to a blue grey.
Reaction 2: Burn a butane lighter
Reaction Type: Combustion
There was a blue flame created by the lighter.
Reaction 3: Hydrogen peroxide
Reaction Type: Decomposition
The liquid became yellow and released a lot of steam.
Reaction 4: Copper and silver nitrate
Reaction Type: Single replacement
The wire became dark grey and started disintegrating.
Reaction 5: Potassium iodide and lead nitrate
Reaction Type: Double replacement
It formed a yellow and thick substance.
Reaction 6: Sodium hydroxide and sulphuric acid
Reaction Type: Acid base
No visible change, the resultant became neutral.