We are the winners of one of the special eTwinning Prizes

Our project won one of the eTwinning Prizes 2010:

SPECIAL CATEGORY WINNERS

Maths and science (prize sponsored by European Schoolnet)

Magic but real experiments

1. Alexandre Costa, Escola Secundária de Loulé (PT)
2. Claudia Cziprok, Colegiul National "Mihai Eminescu" (RO)
3. Claudia Radu Scoala Gimnaziala, "Gheorghe Lazar" (RO)
4. Danuta Tracz, Zespół Szkolno-Przedszkolny w Brzeźnicy (PL)
5. Irena Babinska, Vilniaus r. Pagiriu gimnazija (LT)
6. Manuel Díaz Escalera, Colegio Sagrado Corazón (Esclavas) (ES)

Jury comment: The project shows a concrete ad innovative collaboration among partners using web 2.0. In the project blog you can find videos of experiments carried out by the pupils in the school activities, very amusing and useful to see!


Some project partners could meet in Seville in eTwinning Conference 2010 where prizes were awarded to all winners.

Congratulations to all

Explosion in the box

We prepared:

• a stand
• 2 empty plastic boxes; smaller and bigger so that one could be a kind of lid to the other
• a small piece ( ball) of calcium carbid ( not wet or old)
• water in the wash bottle
• matches

We made a little hole in the bottom of the bigger box. Then a piece of carbide was put in the box in such way so that the hole was higher ang water could be added on the carbide ball.
Carbide reacts with water and in the reaction we obtain a gas - acetylene C2H2:

CaC2 + 2 H2O = C2H2 + Ca(OH)2

Acetylene is flammable and it burns silently if it's pure. When it is mixed with air , explodes and throws away the upper box.



http://www.youtube.com/watch?v=A9QvpGiNgQw

Fire without matches

We carried out the experiment wich shows how to make a fire without matches.

We used potassium permanganate KMnO4 and glycerine C3H5(OH)3.

Be careful and wait while doing it, fire appears after several seconds.

http://www.youtube.com/watch?v=kpae8Xh90mI

OIL POMP

Materials:
1 One small container and one larger glass
2 Oil
3 Water
4 Glue and one coin
5 Spoon
6 Alcohol

Assembly:
1. If the container is of plastic we put on the base one coin to give it stability and to avoid that it floats.
2. You take the small container, and you fill the container until the middle with oil and you see that the oil sets on the bottom of the glass.
3 Inside the glass you fill with precaution, the amount of alcohol that you need to cover the small container. Then with a spoon, you add, little by little, water.The surface of the oil from the small container will be more and more convex, when the water that you have added is the necessary, the oil will give off the container and will forma sphere that will be floating inside the mixture of water and alcohol.

Explanation:
The densities of the three liquids : water (1g/ml), oil (0,92g/ml) and alcohol (0,79g/ml).
The oil floats on the water because it is less dense than the water, but the oil doesn’t float on the alcohol because it is denser. So you can prepare one mixture of water an alcohol, where this oil won’t float and won’t sink until the bottom.

by Macarena, Irene and Sofía

The water that is not wet

To make the experiment we need:

1) A glass
2) A piece of paper
3) A big countainer with water

We have to fill a countainer with water, then we put a piece of paper at the botton of the glass so that, it won´t fall when we turn it down. Later,we turn round the glass and we put it with the paper into the borron of countainer. It´s so important not to till the glass.

Finally, we take the glass out of the countainer and we check that the piece of paper isn´t wet.

The explanation is quite simple the air contened into the glass blocks the water to enter and arrive to the piece os paper which is at the botton of the glass.

by Marta and Isabel

"Colegio Sagrado Corazón, España" (some pictures)

Pictures of the Colegio Sagrado Corazón (España) and the students involved in the project Magic but real experiments.