Chromatography

Aim:
to separate the different pigments in inks using chromatography.

Method:
 1.Cut a piece of filter paper long enough to reach the bottom of the test tube.
 2.Rule a line in a pencil 2 cm from the bottom of the paper
 3.Fill the test tube with 1 cm of chromatography solution (water)
 4.Place a dot of ink above the ruled lied on your filter paper.
 5.Suspend the strip of paper and fold it above
 6.Wait to see what happens. It is important that you do not disturb the test tube.
 7.Repeat with 2 colours.

Results:


Discussion:

 We first draw a dot or a pattern using different colours on the strip of filter paper and then we waited. We saw the ink blend with the other colours and some colours even turned into different colours like the orange turned into yellow and the dark green turned into blue. I think the reason why the blending happened its because the filter paper absorbed some of the water. This process is called chromatography .


Q: Why did it stop absorbing the water when it got to the end of the ink?

science

 Aim:To separate a solute from a solvent in a solution using distillation
 Method:
   1. Set up the equipment shown in the diagram
   2. Add approximately 50 ml of water and a few drops of food colouring to your conical flask.
   3. Light your Bunsen burner. Open the air hole and gently push the Bunsen burner under the tripod.
   4. Heat the solution until most of the solvent has evaporated. Turn off your Bunsen burner.


Results:
 - We saw the coke evaporating and when it went up the delivery tube it turned into water.

 Discussion:
 We first added the solution into the conical flask. Then we make the solution boil and evaporate the solvent by heating it with a Bunsen burner. We noticed that the solvent is boiling. Heating it makes moist and we noticed that gas was coming up the conical flask into the delivery tube. Then when it was travelling(?) into the delivery tube we saw water, clear water flowing through the delivery tube. Then the water vapour condensed down into the test tube. The ice was there to keep the bottom of the test tube cool which helped the water vapour turn into liquid As it kept doing the process we saw the solute down at the bottom which was the sugar left by the solvent. This process is called distillation

Own choice of learning

I decided to draw.I Drew a skull because I find them interesting and they're really fun to draw.I like giving it a little twist to make it a little cute because people think skulls are scary and I wanted to make it a little fun..I drew a skull with "witchy" type stuff on it to maybe make it more interesting(?) I put in stuff in the eye.I also wanted to improve in shading and folds of cloth.

Lin the red stranger

I read a story called Lin and the red stranger Chapter 2. Its a fiction book.

* The story takes place in New Zealand
*They all went to this persons house.Mrs and Mr Hoy and gave the advice to Mr Choy that Lin and Little Lee should stay because they will have jobs to do for them. Mr Choy declined and Lin was glad
*Lin found New Zealand strange.
*Declan was a thief but he did not like being a theif
*He was saving up the money to get to the gold fields

Making a Dilution Series

Aim : To make a dilution series to investigate concentration

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 the the test tube 1 with 10 mL of water. Fill the remaining 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 the 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

With each transfer it got lighter


Discussion:

We first added the solute into the solvent. Then we made an solution.Then we diluted the first solution by taking 5 ml of the solution and diluting it in the 5 other solvents and then we've got a dilution series.We saw that the 1st solution was the most concentrated and the last solution was less concentrated

sound track of my life