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Monday, March 16, 2020

Chromatography

Aim:
To separate the different pigments from using chromatography.

Method:
1. Draw a line across the paper in pencil, 5cm from the bottom.
2. Draw a coloured dot in the middle of the line.
3. Measure out 10mL of water and place in the test tube.
4. Place the filter paper in the test tube and fold over the side. Make sure the pencil line is not in the water.
5. Wait for 5 minuets and observe the results.

Equipment:
1. Felt tip pen
2. Filter paper strips
3. Test tubes
4. Measuring cylinder
5. Pencil

Results:
I choose green and it stretched out and half of it was blue and the other half was yellow. So my one showed 3 pigments.

For the second one we had to do a black dot. It had 5 pigments. Blue, Purple, Black, Orange and a little bit of Pink.


As I was watching the colours change it was changing because the water was making it change. The darker the colour is the more pigments it will have. 




Evaporation

Aim: Is to use evaporation to
Hypothesis: The Copper sulfate will turn into crystals.

Equipment:

  • Copper sulfate
  • solution
  • 250mL Beaker
  • Heat proof mat
  • evaporating basin
  • element

Method: 
  1. Set up element
  2. Add 50mL of hot water to the beaker and place on the element.
  3. Add copper sulfate to the evaporating basin until it is quarter full.
  4. Carefully, place the the evaporating basin on top of the beaker. 
  5. Turn on the element to 8
  6. Heat the solution until most of the solvent has been evaporated and crystals of solute are forming. 
  7. Turn off the element- careful not to touch as will be hot for a long time.


Observations: The water looks like it is evaporating.

Monday, March 9, 2020

9/11

In Social Studies we had to do a timeline on 9/11 and the tragedy's that happened. The tragedy's were about an American Airline plane that crashed into the WTC (World Trade Centre)





Tuesday, March 3, 2020

Athletics: Discus

1. Roll off your small finger.
2. Wrap 4 fingers around it.
3. Stand side on to the line.
4. 1 wind - up (not 3).