Diluting Potassium Permanganate Crystals!

Recently in science we have been learning about soluble and insoluble mixtures and dilutions. Yesterday we experimented dissolving potassium permanganate crystals in different levels of water. Using test tubes on a rack the single potassium crystal was initially dissolved in 10ml of water. In the remaining 5 test tubes only 5ml of water was added. Using a pipette approximately 5ml was then added into the next tube and continued. Every test tube progressively became lighter and more diluted as the mixture was distributed . 

As the potassium permanganate crystal was purple the mixture was supposed to be purple however there appeared to be  residue of another chemical in one of the test tubes which caused our solution to turn into a light orange. Although the colour was different the result of the dilution ended the same with progressively less pigmentation. The final result was diluting the potassium permanganate with different amounts of potassium. The first test tube in which the crystal was dissolved was a deep purple where as the final tube was a very light orange almost clear.

Dilution: Weakening the strength of a solution

Concentration: The amount of a substance within a solution.