Have you ever wondered why there are so many bubbles in fizzy drinks? Well this experiment will give you a clearer understanding of how bubbles are made up of gas that has been mixed into a liquid (fizzy drink).
- A Bottle of Lemonade (you can see the results better in a clear fizzy drink)
- A Packet of Raisins
- A Glass
What to do:
- Pour lemonade into the glass and add raisins... watch what happens...
The Science Factor:
The bubbles of gas in the drink stick to the raisins. The gas is lighter than the liquid and so it raises to the top of the glass, carrying the raisins. The bubbles then pop and the raisins sink back down. More bubbles stick to the raisins and they raise again.
Hints and Tips:
- Did you know all sorts of food has gas bubbles in it, such as the holes found inside fairy cakes, muffins and breads.
- This type of gas is called Carbon Dioxide.