Experiment 1: Boat powered by Baking Soda and Vinegar:
How to make a baking soda and vinegar powered boat:
We need: Empty plastic bottle, baking soda, vinegar, straw, scissors, tape and water.
Pierce a hole in the end of the plastic bottle and poke the straw through. Tape around it to prevent air escaping and keeping the straw firm. Pour 1 dcl vinegar into the bottle and after pour info 2 tablespoon of baking soda. Quickly add the lid and place the boat onto the water. The bubbles coming out of the straw and the boat is sailing.
Experiment2: Turn of the flame with baking soda!
For the little experiment you will need the following materials:
a large, flat container (having a diameter of about 15 centimeters)
a small candle or two candles
baking soda 50 grams
about five tablespoons of lemon juice or vinegar
You will light a candle in this experiment, so you need an adult supervision. Since baking soda is harmless as a chemical substance, you do not need gloves.
Set the candle in the container.
Scatter baking soda around it - the floor must be covered.
Now light the candle.
Then pour the citric acid or vinegar gently on the edge of the container on the baking soda and watch the reaction.
Right, after a short time the candle goes out.
Why the candle goes out? What is the chemical reaction behind it?
When baking soda comes into contact with acid, such as lemon juice or vinegar it react and form the so-called carbon dioxide CO2. As this gas is colorless, you can not directly observe his escape. That's why you need the candle - it is the proof that during the chemical reaction carbon dioxide is produced. The CO2 displaces the oxygen which the candle burning needs. Consequently, the candle goes out.