EXPERIMENTS IN THE 6th LEVEL

 EXPERIMENTS IN 6th A

"Volcano on fire in the classroom"

With some spoonfuls of vinegard and bicarbonate of soda, Amelia has created an erupting volcano inside the classroom. After mixing these substances carbon dioxide is formed, forcing the content of the bottle to come out of it, making the same effect as real volcanoes.

Video of the experiment

"Sand that doesn't get wet"

After sprinkling with some waterproof spray a small quantity of sand and waiting for a couple of hours, Candela has achieved that this sand doesn't soak in water!

   

Video of the experiment

"Rain of colours"

In this experiment, Iria has made a wonderful colourful rain in a jar of water. Mixing water, oil and colourant has demonstrated how different densities can produce this incredible effect. First, you have to mix water and oil. As it is known, the oil has more density and stays on top of a jar and when you add the colourant to the mix, these start to fall down little by little.

  

Video of the experiment

"Pepper and soap"

Paula has shown us how important is a good hygiene when cleaning too. Mixing pepper and cinamon with water on a plate, she has shown us the chemical properties of washing-up liquid and how dirt run away from it they are in contact.

 Video 1                         Video 2

"Water that doesn't fall"

With a glass recipient with water, a tight and an elastic band, Eugenia has tried to make water fall through the tight but it didn't fall (at the beginning, later it has been falling little by little). Thanks to the surface tension of water itself, the surface of water ends up acting as an elastic membrane blocking the content of the recipient from pouring.

                                              

   Video 1   Video 2    Video 3                                                                   

EXPERIMENTS IN 6th B

"Floating Candle"

Alberto has shown in class the force of the atmospheric preassure with a glass, a plate, water and a candle. Once the candle is lighted, it is consuming all the oxygen, so the preassure inside the glass starts to be lower and the water level rises.

"How to introduce a egg in a bottle"

When the air inside the bottle is heated, the molecules, or tiny air particles, inside the bottle spread out, increasing air pressure. As the air in the bottle cools, the air pressure decreases. The greater outside air pressure pushes the egg into the bottle. Blowing into the bottle raises the air pressure again.

This is the experiment that Jimena and Lucia M showed in class, that time didn't work properly but they explained and all had a great time.

"The egg that bounces"

Laura E.  introduced an egg in vinegar for few days. When she took out the egg we could see how it bounced like a ball until it broke on the floor.

"A Rainbow"

Samuel and Germán show us how to make a rainbow coloring a kitchen paper and putting it in two glasses of water.

"The Volcano"

Our students Mª Isabel and Lucia P. show us this chemical reaction simulating the eruption of a volcano.

1. Combine the vinegar, water, dish soap and 2 drops of food coloring into the empty soda bottle.
2. Use a spoon to mix the baking soda slurry until it is all a liquid.
3. Eruption time! … Pour the baking soda slurry into the soda bottle quickly and step back!

 EXPERIMENTS IN 6th C

"Jumping egg"

Rocío has shown us how you can become an egg in a bouncy item after sinking it in vinegard for two days. The acid properties of the vinegard and the calcium carbonate of the shell creates a chemical reaction that disolves this shell. Thi does not mean that the egg can't be broken              

                                     

Video of the experiment

"Solid viscous cornflour"

Laura has created a viscous compact substance simply by mixing four spoonfuls of cornflour with a few mililitres of water. This mixture doesn't moisten the cornflour, it has got the opposite effect: when you pressure it, it becomes more viscous. In those areas where you apply pressure, the flour particles become compact, catching water particles among them, and this mixture becomes temporarily in a solid material.     

                          Video 1       Video 2      Video 3      Video 4     Video 5      Video 6

"Rainbow of colours, egg in a bottle and red inversed rain"

Sergio has shown us three short and curious experiments. First, he has created a rainbow separating the coloring of some sweets just with a little water. After that, he has introduced a baked egg in a bottle with some fire at the bottom. This happened because the need of oxygen has made the pressure of the bootle to pull the egg to the bottom. And finally, with some liquid colourant, water and some fizzy pills has created a rain of red colour because of the effervescence of the gas.

                                                       
                               

"Pepper and soap and inflated balloon"

Iván has demonstrated two easy and interesting experiments. First, removing dirt in a bowl with some washing-liquid soap in a finger and then, introducing bicarbonate in a bottle and some spoonfuls of vinegard in a balloon has achieved inflate the ballon placing it over the bottle. This mixture creates carbon dioxide that inflates the balloon.