Dilution Series experiment

 Aim - To make a dilution series to investigate concentration 

Equipment:

• A potassium permanganate crystal
• Six large test tubes 
• Tweezers
• A plastic transfer pipette 
• A test tube rack
• A 10ml measuring cylinder

Hypothesis: That test tube 6 will be the most dilution and the 1st test tube will be the most concentration.

Method - What to do for the experiment

1. Place the six tubes in a test tube rack. Label the rack with numbers 1 - 6.
2. Using the measuring cylinder, fill the first tube with 10 ml of water, secondly, with the rest of the other tubes, pour in 5 ml of water in each of the remaining tubes.
3.  Using your tweezers, add a single crystal of potassium permanganate to test tube 1.
4. Gently shake the test tube until the crystal has dissolved.
5. Using the transfer pipette, carefully remove exactly 5 ml from test tube 1 and pour it into test tube 2.
6. Rinse the transfer pipette thoroughly to ensure that no purple solution remains.
7. Gently shake test tube 2 and repeat the transfer process, transferring exactly 5 ml of the solution from test tube 2 to test tube 3. 
8. Rinse the pipette again and repeat the transfer process for test tubes 4, 5 and six.

What is Dilute Solution??	What is Concentrated Solution??
A Dilute solution contains a small amount  of solute. At home, if you were to make a ‘weak’ coffee, in a scientific term, you are making a Dilute solution of coffee.	A Concentrated solution contains a large amount of solute. At home if you were to make a ‘strong’ coffee in a scientific term, you are making a Concentrated solution of coffee.

Key words:

 

Concentrated - a measurement of how much solute is in a solution

Dilute - to make the concentration of a solution less

Particles - very small pieces of matter

Separate - to split apart