Volcano Project.

 Aim: to make and erupt a volcano via chemical reaction.

Hypothesis: I think the volcano will erupt when we mix the chemicals.

Equipment: Our Volcano, Baking soda, vinegar, food colouring, dish washinghjuj  liquid 

Method: Make a volcano, paint the volcano, make the volcano erupt, clean up after.

• warm water
• liquid dishwashing detergent
• red or orange food colouring
• baking soda
• vinegar

1. Pour warm water into the volcano until it is 1/2 to 3/4 of the way full.
2. Add several drops of food colouring.
3. Add a squirt of detergent. This helps the ‘lava’ foam up and flow.
4. Add a couple of spoonfuls of baking soda.
5. When you are ready to start the eruption, pour vinegar into your volcano.
6. You can recharge the volcano with more baking soda and vinegar.

Note: If you don’t have vinegar, you can use another acidic liquid, like lemon juice or orange juice.

the hydrogen ions in the vinegar react with the sodium and bicarbonate ions in the baking soda. the chemicals release carbon dioxide. This makes the reaction bubble and expand, just like when you shake up a can of soda and open it!