Aim: To make a dilution series to investigate the concentration
Equipment: A potassium permanganate crystal, six large test tubes, tweezers, a plastic transfer pipette, a test tube rack, 10ml measuring cylinder
Method:
1. Place the six test tubes in a test rack. Label the rack with numbers 1-6
2. Using the measuring cylinder, fill the test tube 1 with 10 ml of water. Fill the remaining test tubes with 5ml of water
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 5ml from the test tube 1 and pour in into test tube 2
6. Rinse the transfer pipette again and repeat the transfer process for test tube 4, 5 and 6
Results:
Discussion - The solute which is the crystal and the solvent which was the liquids leads to the solution
Solute: The Solid
Solvent: The Liquid
Solution: The Two Things Added Together
Soluble: The Substances Cant Dissolve
-The color goes lighter