Welcome!

This is a blog of the 4th grade class in la Farigola de Vallcarca School in Barcelona. This year we are doing “Aula de Ciències” in English.
In this blog we want to show you the experiments we do in our Science Lab. Science is fun!


dimarts, 8 de febrer del 2011

Fatty foods

Fatty foods on PhotoPeach
MATERIALS:
Brown grocery paper, cut into small squares. Different foods to test: crisps, peanuts, apple, banana, butter, mayonnaise, oil, chocolate, cheese, nuts, popcorn, ham... INSTRUCTIONS:

- Rub each piece of food onto separate paper squares. Count to 20 while you rub, so that you test each food for the same amount of time.

- Label the squares so you remember which food you rubbed on each one.

- Put the papers in order from the most stained to the less.

- Leave them a week (an overnight is enough).

- After a week, put the papers in order again. You'll see that the order is different now.

WHY:

Fat stains the paper while other liquid substances (mostly water) evaporate.

WHAT DO YOU THINK ABOUT IT? WRITE YOUR COMMENTS.

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4 comentaris:

  1. Christian14 de març del 2011, a les 14:31

    This experiment is very very fat (?) because you rub your fingers and food on a brown paper.

    ResponElimina
  2. Berta20 de març del 2011, a les 14:46

    Hello!!! The paper is very greasy Marta. Bye bye

    ResponElimina
  3. Carles22 de març del 2011, a les 11:24

    This experiment is interesting the papers are very greasy.

    ResponElimina
  4. Carmen3 de juny del 2011, a les 11:03

    Hello, the experiment is very funny!!!, the paper is very greasy with the food, Marta.
    Bye bye

    ResponElimina

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