Quiz Time!

So many weeks of experiments and now, lets have some time for us to move our brain ~  Its basically about science, maths, IQ and some general knowledge questions. 

Ohh ya, there is a few lower sixes start joining us already~ WELCOME!!! You will not regret as you choose to join this club~

 serious answering~

Discussion session~

11/7/2013

Shiuan Yih.

Water that line up and CAN CRUSHING~

Water Line Up?

Try this~

Water travelling following the thread~

Go get two cups and try it out!

You see, members also tried. So what are you waiting for? Go and have a try! By the way, they like making 'teh tarik'. Right? XD

Can crushing!

This is another easy experiment~ 

First of all, get a aluminium tin which is uncrashed.

Fill it with a little of water just to cover the base of the can.

Heat the can filled with water until it boils. 

Placed it invetedly into a basin that is full of water and see how it CRASHED! 

Lets have a look on how the members mess it up

28.2.2013

ShiuanYih.

FIREBALLS and THUNDER!!!

Have you ever see thunder in a test tube?

Interesting right?  Let's do it together then. 

Firstly, set up the apparatus like this

A boiling tube is clamped to a retort stand. Then, add concentrated sulphuric acid followed by ethanol on top of the sulphuric acid. Prevent them from mixing. The experiment set-up is left aside for a few minutes until two layers in seen. 

After that, a small amount of potassium permanganate and observe!

This is what you will see~ Thunder!

 Reaction starting soon!

See the sparks and at the end... Black precipitate...

Internal combustions of ethanol, producing sound, light similar to that of lightning, The sulfuric acid and the permanganate react to form manganese heptoxide, which explodes when it comes into contact with the alcohol or acetone. The reaction looks bit like a thunderstom in a test tube.

Fireball! Can I touch it?

Lets find out whether we can touch a fireball. 

Everyone know that fire is hot and when an object is on fire, its hot and we knew that we cannot touch it with bare hands. BUT this time its WRONG! HAHA

This experiment should not carry out at home... 

Firstly, soak the cotton ball in alcohol. Then light up the cotton ball. 

Now you can try to hold it with barehands...

On hands!

Alcohol burn in a very low boiling point. So the temperature is not high and thus we can still touch the cotton ball although it is still burning.

Interesting right? So we shouldn't be selfish... Haved combined meeting with the lower form as well to share this interesting experiments~

Crowded with members~

Exco in-charge~

21.2.2013

Shiuan Yih.