Friday 24 May 2013

Gases - Expending Possibilities


WALT write a procedural text in the form of experiment.  
This activity is trying to see how increasing pressure affect gases.
Hypothesis:
When I pour hot water at the end of the bottle it will create bubbles and steam.
Materials
  • bottle
  • boul
  • straw
  • measuring cup
  • blue tack
  • hot water

Methods
1.First you put the straw in the bottle.
2.Then you surround the bottle mouth with blue tac.
3.Then tip hot water at the bottom of the bottle and steam will appear inside the       bottle.
Conclusion
The bubbles came out because the hot water  increased pressure by warming the air inside the bottle.

Tuesday 21 May 2013

How To Make Ice Cream


How to make ice cream
What you need:

  • Sugar
  • jugs
  • sea salt
  • food colouring
  • snap-lock bags
  • milk
  • vanilla essence
  • measuring spoons
  • ice
  • cream


What we do
firstly Put the crushed ice and 200 gm of sea salt  in the big snap lock bag.


PUT MILK/ICE CREAM VANILLA ESSENCE ,SUGAR AND FOOD COLOURING INTO THE SMALL SNAP-LOCK BAG.


AFTER,  you put the small BAG IN THE BIG SNAP-LOCK BAG THEN YOU GENTLY SHAKE AND MOVE IT AROUND THE ICE UNTIL THE MIXTURE FREEZES.  YOU THEN DRAIN THE WATER OUT OF THE SNAP-LOCK BAG AND PUT THE ICE CREAM  IN A FREEZER  AND LEAVE IT IN THERE  FOR 2 HOURS.
Conclusion


The sea salt prevents the ice from  melting and the liquid in the small snap-lock bag turns the  cream into solid -  and that is ice    cream!