Definition for Dilution: Making something less concentrated. There will be less particles in the liquid.
Concentration: How strong something is.
Aim: To make a dilution series to investigate concentration.
Hypothesis: I think the first test tube will have the most dilute liquid because it would have more added to it in the start.
Equipment:
A potassium permanganate crystal
Six large test tubes
Tweezers
A plastic transfer pipette
A test tube rack
10 mL 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 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 solution from test
tube 2 to test tube 3.
8. Rinse the pipette again and repeat the transfer process for test tube 4, 5 and 6.
Was my hypothesis right: Yes because overtime the mixture was more watery and watered down. This makes it more dilute, and the first one was the least dilute
How do I know how this happen: This happens by the mixture overtime become more dilute as it was moved more into more water.
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