The document describes two natural science experiments. The first involves putting vinegar in a bottle and bicarbonate in a balloon, then placing the balloon in the bottle so that a chemical reaction inflates the balloon. The second uses sticks placed in a star shape with points touching; a drop of water is added and causes the sticks to join together.

1. NATURAL
SCIENCE PROJECT

3. 
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A bottle
A balloon
Bicarbonate
Vinegar

4. 
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First,we put the vinegar inside the bottle and
after that the bicarbonate inside the balloon.
Carefully, we put the balloon at the top of the
bottle.
The bicarbonate falls into the bottle and mixes
with vinegar,this produces the gas that inflates
the balloon.

9. 
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Sticks
Water
A spoon

10. 
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We divide the sticks in two parts (they mustn’t
be broken at all).
We place the points of the division
together,forming a star of 10 sticks before been
subjected to water
We put a drop of water at the center and the
sticks will join together.