Dilution

 Definition:

Dilution is when there is a weak concentration of an element in a solution/mixture. When there is less compared to the majority.

Concentration: When something is more particles of something in a solution/mixture.

Dilution series:

Aim: To make a dilution series to investigate concentration.

Equipment: A potassium permanganate crystal, six large test tubes, tweezers, a plastic transfer pipette, test tube rack, 10 ml measuring cylinder.

Hypothesis: 

Which test tube would be the most dilute? -The test tube that will be the most dilute would be test tube 6. 

Which test tube would be the most concentrated? - The first test tube.

What did you do? - We put the crystals into the first test tube and distributed the liquid to the next. And repeated the process for the other tubes until the water got lighter and lighter and lighter.

Was your hypothesis correct? - Yes, my hypothesis was correct. After distributing 5 ml to every next tube, the last tube ended up being lighter than everything else.

Which was more concentrated and which was the least? - The most concentrated was the first test tube and the least was the sixth test tube.

How do you know? - The solution was distributed between the test tubes, the amount becoming less between the test tube with each distribution.