Dilution Experiment

Hi everyone! Welcome to another post for science we did an experiment on dilution. During the experiment, we needed to know what kinds of things were happening so we learned about what Solution, Solute and Solvent meant. 

Solution: A mixture that forms when one substance dissolves another. 

Solute: Substance being dissolved. 

Solvent: A substance in which the solute dissolves in. 

Concentration: A measurement of how much solute exists in a certain amount of solvent. 

Dilute: To make a liquid less concentrated; weaker. 

Experiment

Aim: To make a dilution series to investigate concentration.

Hypothesis: I think that over time the colour of the solution should be lighter than the original colour.

Equipment:

- Potassium Permanganate

- Six large test tubes 

- Test tube rack

- Measuring Cylinder

- Pipette 

Method:

1. Place the six test tubes in a test tube rack and label them with numbers 1 - 6. 

2. Using the measuring cylinder, fill the first test tube with 10ml of water. Then fill the remaining test tubes with 5ml of water.

3. Using Tweezers or a Popsicle stick pick out chunks of Potassium Permanganate in the first test tube. Then mix. 

4. Then, using the pipette transfer approximately 5ml of the solution in the first test tube to the second test tube. 

5. Then repeat the same thing with the other test tubes. Transfer 5ml from the previous test tube to the next test tube.  

Test Tube 1 to Test Tube 6 

Observation: 

When transferring the solution from the first test tube the solution looked lighter and when we kept transferring the solution from each test tube, from first to last we noticed that it was a lot lighter than the first test tube. 

Discussion: 

It was a fact that the first test-tube had the most concentration as it because it was of a darker colour than the rest of the solutions and we've also seen that the last test tube (test tube No. 6) was the least concentrated. Which can also mean that it was the most diluted out of all of the solutions. 

In my opinion, this happened because of how much the Potassium Permanganate was being transferred in low concentration liquids. So to conclude my statement this happened because the Potassium Permanganate was being transferred over and over again to diluted liquids which made it lose it's high concentration particles.