At the first station, we took a small piece of steel wool and stretched it out so that it has a larger surface area. With tongs, we put the steel wool into a flame.
When the flame contacted the steel wool, the steel wool became luminescent. The steel wool started to melt from the heat and then it burned and crumbled. Once the reaction was done, the steel wool no longer looked shiny. It resembled darker and matte.
Here, we allowed the butane lighter to burn for 10 seconds.
We noticed that there was a blue flame as well as some sparks of yellow/orange.
At this station, 5.0ml of hydrogen peroxide in a small graduated cylinder starts to foam when a small amount of Potassium Iodide (KI) crystals were added. The substance turned yellow and burst out.
At station 4, we mixed a small piece of copper wire with a few drops of 0.1M Silver Nitrate Solution. We let the solution sit for 10 minutes.
After 10 minutes, we observed that the crystals had formed around the copper while it was sitting in the Silver Nitrate Solution.
Here, we mixed 1 drop of 0.1M Potassium Iodide with a drop of 0.1M Lead (II) Nitrate in a spot plate.
When both chemicals came into contact, the liquid turned to an opaque yellow.
At the final station, we mixed a few drops of 0.1M Sodium Hydroxide with a few drops of 0.1M Sulphuric Acid on a spot plate. We tested both solutions with both red and blue litmus paper. Then, we mixed the acid and the base together. We tested the acid and base combination with both red and blue litmus paper as well.
The Sodium Hydroxide turned the red litmus paper blue. The blue litmus remained blue. The Sulphuric Acid turned the blue litmus red. The red litmus remained red. For the combination of the acid and base, the blue litmus paper turned red and the red litmus paper remained red.
Due to technological issues, we could not publish the separate videos of the lab on this post. Therefore, we have an embedded YouTube video which demonstrates the reactions at all 6 stations. Watch here: