This is a great fun experiment for your little ones (and you!) to enjoy and chances are you will have the ingredients on hand in your kitchen cupboard!
What you will need
Step by step guide
1. Fill your tray / container with the baking soda
2. In your ice-cube tray / containers add some vinegar and some food colouring
3. With the syringe or similar, suck up some of one of the vinegar / coloring mix
4. Squirt the mix from your syringe or similar onto the baking soda mix and watch the reaction!
As you can see from the video above our children had great fun doing this experiment with Darcy and I think it is one that they will be happy to do again and again!
Here's the Science bit!
As the vinegar mixes with the baking soda the bubbles and foam that form are filled with carbon dioxide gas known as CO2. This happens as there is an acid/base reaction, The vinegar being the acid and the baking soda being the base.
At the beginning, when they react they make carbonic acid which is unstable but very quickly it breaks down to make CO2 and water.