Distillation

 Today we did an experiment on Distillation, Evaporation, and Condensation, and it was also a really good day...

To separate a solute from a solvent in a solution using distillation.

Our Equipment,Solution Of Coke, Conical Flask, Heat Proof Mat, Delivery tube, Bunsen burner, Tripod, Gauze Mat, Bosshead & Clamp, Boiling tube, Retort stand.

Method:

1. A mixture of coke and water was heated in a conical flask…

2. The water evaporates leaving the coke behind…

3. The water vapour flows through the delivery tube…

4. Heat the solution until most of the solvent has been evaporated. Turn off your element.

Results: We saw that the coke started to bubble because of the heat of the element, then at the end of the experiment there was syrup at the bottom.

Discussion: At the end of the experiment there was only solute left in the flask because when we heated the coke the solvent evaporated into the test tube.

Conclusion: At the start the coke started to bubble, the bubbles went to the side of the flask, After the

flask had condensation. Soon the coke really started boiling and it started creating a liquid in the boiling tube.  At the end there will be brown sticky sugar left over. The coke had quite a bit of sugar left over and surprisingly the coke zero also had sugar left over.

Dilution Experiment Hurumanu 3 Science

Today in science we were doing a dilution experiment we did it to learn about dilution .

Our aim was to make a dilution series to investigate concentration.

What equipment we used we used Potassium permanganate crystal,six large test tubes,tweezers,a plastic transfer pipette,a test tube rack ansd a 10 mL measuring cylinder.

1. Place the 6 test tubes in a test tube rack.  Then label them numbers 1-6.

2. Using the measuring cylinder, fill test tube 1 with 10 mL of water. Then fill the other five test tubes with 5 mL of water.

3.  Using your tweezers,  add a single crystal of potassium permanganate to test tube one.