Wednesday, January 27, 2010

Nitrocellulose - the gun cotton

Nitrocellulose, an explosive similar to nitroglicerin but, instead of glicerin, it has cellulosis on its composition. It is not sensitive to impact just to heat.
It burns so fast that there is no time to exchange heat with the hand

Pascal Principle bracks the bottle

This tick uses the pascal principle to break up the bottom of a bottle! You'll need some practice to do that. Warning, the broken glass can be very dangerous!

Make ferrofluid using household materials

This video shows how to make ferrofluid using household materials

Tuesday, January 26, 2010

How to Play tennis using soap bubbles and a carpet racket

This video shows how to play tennis using a soap bubbles and a carpet racket. The soap bubbles are formed by a doubled layer of soap at extremities and a layer of water at center.
The polar part of soap molecules are bonded to the water and the nonpolar part are on the outer side.
Carpet is composed of polyester, as the bubble's outer side, so the interaction between them is very weak and the bubble do not pop out.

Monday, January 25, 2010

Flame test as you never seen before

Each chemical element has its own Identity given by the color emited when it is burning. The colors in fireworks is due a diferent kind of elements. Copper give the color green, sodium give the yellow one. This video shows a lot of diferent elements and its correspondent colors.

Oxydation of glycerine by potassium permanganate

Glycerine or glicerol is oxidized by a very powerfull oxidant, the potassium permanganete. This reaction liberates a lot of heat, it's called exothermic reaction.

Science experiment - how to make butter

Learn about science and you make your own butter. Science has never tasted so good.