This is a simple experiment, perfect for extending knowledge after a volcano or other baking soda themed activity.
Ice cube tray
Anything else you want to test
Things to think about
What to keep constant?
Amount of baking soda
Amount of substance to test
Substance being tested
How will you know a reaction has taken place?
What might you see?
Place your baking soda into containers, a muffing tray or similar is perfect for this. Make sure you add the same amount to each container.
Can you predict which substances will react and which won’t?
Use a pipette to add each substance to a different container of baking soda, make sure you use the same amount of each substance.
Record which reacts and which do not react. What do you notice about the substances that react?
Can you think of anything else to test?
Why does this happen?
Bicarbonate of soda – baking soda is alkali which reacts with acids to produce carbon dioxide.
Can you test the substances that reacted with the baking soda again? Which gives the strongest reaction?
Try one of our other baking soda experiment ideas.
Great for Key Stage 1 and Key Stage 2