February 29, 2012

Happy Leap Year!

It's the 29th of February today! Happy Leap Year everyone :) I feel bad for the babies who are born today, they'll be celebrating their birthday every 4 years :( what a pity.


me and elaine's jayus birthday 'cake'
So me, Elaine and Delfina had our chemistry demonstration just now and it was seriously a total failure. We didn't fail doing the experiment (except the coke mentos one) but we failed getting the audience's attention. All of them (sec 1 Monet students) were like -_- when they're visiting our 'booth'. It's totally different from when they're visiting other group's 'booth'. We did the 'make burst of colour in a tray of milk'.




What you need:

  • A flat tray (like a cookie baking tray)
  • Food coloring (at least 3 different colors)
  • Whole milk - low fat milk will not work for this experiment
  • Liquid soap used for washing dishes

Procedure:

  1. Carefully pour the milk into the tray so that it just covers the bottom
  2. Add about 6-8 drops of different colored food coloring onto the milk in different spots
  3. Add about 5 drops of the liquid soap onto the drops of food coloring and watch the show!
  4. Clean up.

So you know where the color comes from, but why milk and liquid soap? The main job of dish soap it to go after fat and break it down. Usually the fat is on dishes from the food we eat, but fat is also in whole milk. When you drop the liquid soap onto the tray, it tried to break down the fat in the milk. While it was doing that, it caused the colors to scatter and mix creating a very colorful display. Have fun! 


 I admit it's boring but they should've at least appreciate what we've done -.- okay nevermind.

 Some random pics I took just now:






No comments:

Post a Comment