Concentration - Science Experiment.

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, 10,l measuring cylinder.

Method: 

1. Place the six test tubes in a test tube rack. Label the rack with numbers 1-6.

2. Using the measuring cylinder, fill test tube 1 with 10 ML of water. Fill the remaining test tubes with 5 ML 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 exact,y 4 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 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 6.

Results and Discussion :
When we poured the Potassium Permanganate it turned dark purple. As we transferred the potassium along the six test tubes the concentration of the potassium got lighter until the last test tube was a really light pink and purple color. We mixed all the test tube and it came to this color -------------------------------------------------------------->

Conclusion: 
This exercise involved mixing a solute with a solvent to get a solution and to see if the solute was insoluble or soluble. The solute was soluble meaning the crystal dissolved in water.
In conclusion, the mixing of dark colors with water get lighter as you add more water in.