1. How to make a
model volcano

2. Materials
A plastic bottle, 33 cl.
Two small glasses of water.
A small glass of vinegar.
Baking soda.
A funnel .
A piece of card or cardboard.
Plasticine in different colours.
White glue.

3. Make a cone with a piece of card and cut
off the tip.

4. Place the plastic bottle inside the cone.

5. Glue the bottle and the cone onto
the cardboard.

6. Cover the cone with plasticine,
using different colours.

7. Leave the top of the volcano open.

8. Use the funnel to pour the water and the
vinegar into the botle.

9. Add a spoonful of baking soda and watch
what happen.

11. How does it work?
A Volcano is produced over thousands of years as heat a pressure build
up. That aspect of a volcano is very difficult to recreate in a class
experiment. However this volcano will give you an idea of what it
might look like when a volcano erupts flowing lava.
This is a chemical reaction: The baking soda is sodium bicarbonate. The
vinegar is weak acetic acid. The two chemicals mix together to form
carbon dioxide gas. Gases and molten rock escape from a real
volcano in much the same way as the carbon dioxide and water-
based lava are forced out of the model volcano.
You can recharge the volcano by adding more baking soda and vinegar
so you can have as many eruptions as you like.

12. •I hope you have enjoyed
learning how to make a
baking soda and vinegar
volcano.