Dilution Experiment

On Monday my class and I got to do an experiment including diluting the chemical potassium permanganate, we have been learning about concentration and dilution so we did an experiment to see the result in front of us and understand what it looks like.

Aim: To understand what dilution does and how it works

Method: We had gotten our rack and we placed six test tubes and started putting water in each individual tubes and placed 5mil into each tube beside one the one that we left we had poured 10mil into it. We had then gone to our teacher so they could put the potassium permanganate. We then gently placed the test tube in the small rack and began stirring the mixture until it became a beautiful dark purple. Our teacher then explained that we had to take 5mil out of the 10mil tube and place it in the 5mil ones but we had to keep taking from the one we had originally placed the mixture in, so our result would look like a transparent pink.

Equipment:
Test Tube Rack
6x Test Tubes
Pipette
Potassium permanganate crystal 
Tweezers
10mL measuring cylinder

Results:

Discussion:

As you can see in the photo the color purple gets lighter and lighter as it goes past each test tube. That is because the last few test tubes had more water which means that there was the least amount of potassium permanganate.  

The test tube that is light purple has least potassium permanganate, most water, which means 

most dilute =least concentrated

Therefore the dark purple test tube has the most amount of potassium permanganate, least amount of water which means 

most concentrated = least dilute.