Keywords:
Concentration - The amount of constitute divided by the total volume of the mixture
Dilute - A substance weakened by the addition of other substances
Aim:
To make a dilute series
Equipment:
A potassium permanganate
Six large test tubes
Tweezers
A plastic transfer pipette
A test tube rack
10ml measuring cylinder
Hypothesis:
The solutions with the least water will appear less and less colourful as more water is added
Method:
1. Place the six test tubes into the test tube rack. label the rack 1-6
2. Using the measuring cylinder fill 1 test tube with 10ml of water and the rest with 5ml
3. Add a small crystal to the 10ml test tube
4. Gently shake 10ml test tube until the crystal has been dissolved
5. Transfer 5ml out of the 10ml test tube then repeat until the last test tube
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