Showing posts with label Science Experiments. Show all posts
Showing posts with label Science Experiments. Show all posts
How to Play tennis using soap bubbles  and a carpet racket

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.
Flame test as you never seen before

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.
Top 10 science trick for parties

Top 10 science trick for parties


This video elaborated by  Prof Richard Wiseman from the University of Hertfordshire (UK) show the best science trick that you can do to in a party to entertain your friends.
Eggshel and vinegar - reaction to make a rubber egg

Eggshel and vinegar - reaction to make a rubber egg


The eggshell has calcium carbonate in its composition. Acids as vinegar (acetic acid) reacts with calcium carbonate generating calcium acetate and carbon dioxide. After all calcium carbonate be consumed will remain just the proteins of the eggshell making a elastic shell.
Sodium Acittate hot ice

Sodium Acittate hot ice


This video shows how to make hot ice, a supper saturated solution of sodium acittate that crystallizes when you disturb it or add a small crystal.
Rainbow juice using a Universal indicator

Rainbow juice using a Universal indicator


Universal indicator is used to find out the approximated PH of some substance. This video shows at first a ph 14. As some acid is added the color starts to changes. In the end the beakers bottom have a different ph from the top, so the various colors appears.
Chemistry Experiment - How to make a mirror

Chemistry Experiment - How to make a mirror



Mirrors always fascinating the human being, the possibility to look ourselves face to face is a mark in a culture of a people. That’s why these objects were so precious in ancient times and still are for some indigenous tribes.
Nowadays it is used, beside the self admiration, in cameras, telescopes and satellites.
When the man first went to the moon, they left a mirror there, so today using a laser is possible to measure the distance earth moon very accurately.
This videos shows how to make a mirror by using the glucose to reduce a silver complex. The metallic silver is deposited in the flask forming a mirror’s surface.
Falling Smoke

Falling Smoke



The smoke inside the bottle falls becouse it is cold. Otherwise it ascend with the warm air as we always see.
Learn how to do a sodium dichromate volcano

Learn how to do a sodium dichromate volcano

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Sodium dichromate is a orange solid. During its decomposition N2 , water and chrome oxide are liberated. The total volume increase in about 30 times. Some chrome oxide dust and the heat liberated make it really seamed with a true volcano.