26th Primary School of Patras -Class E1

Experiments with simple things

            1st experiment

              Yeast balloon

MATERIALS
 • Ruler
 • Warm water
 • A small, clear plastic bottle
 • A sachet of dry yeast
 • A spoon full of sugar
 • A balloon

METHOD

 1. Pour 2.5 cm. of warm water into the bottle

2. Add the yeast and mix lightly

3. Add the sugar and mix again

4. Stretch the balloon, blowing it a few times and then letting the air out (no need to tie it!) Then fit its neck to the neck of the bottle.

5. Place the bottle in a warm place such as a bright window, check it after twenty minutes.

             2nd experiment

              Lemon volcano

●Materials

Baking soda

Lemon

Knife

Spoon

Bol

Pastry color

●How do you make?

Cut the lemon in half and then cut the back of the lemon and place it in the bowl

Squeeze the lemon until all the juice comes out.

Then put a few drops of food coloring on the lemon.

Finally put a few spoonfuls of soda on top and then mix the soda with the spoon.

                       3rd experiment

                            Sticky ice 

 Materials
  An ice cube of any size
  A plate
  Twine, at least 12cm.
  Salt
 

 Method
 1Place an ice cube on the plate and rest a piece of string on it.

2 Count to twenty and then see what happens when you lift the string.

 3Lay the twine back over the ice cube.

4 Sprinkle a pinch of salt on it, where it rests on the ice cube.

5He counted to twenty again and picked up the string.

4th experiment

Ballon rocket

Materials:

1) Pass the twine through the straw.

2) Tie the ends of the string to the two pieces of furniture at about the same height, after placing them at a distance of 3.5 meters between .(Use the tape measure to measure the distance)

3) Blow up the balloon and grab his neck. Don't tie it

4) With a piece of scotch tape or masking tape, stick the balloon under the straw.

5) Drag the rocket balloon to the end of the string (with the neck of the balloon facing away from the rocket's path) and let go.

Experiment:

CUM SE SCHIMBĂ IMAGINEA ÎN SPATELE UNUI PAHAR CU APĂ

Avem nevoie de : 

- cartonașe cu imagini cu omuleți-bețișoare

- un pahar cilindric cu apă.

IC BONSEGNA-TONIOLO ITALIA