Boxie’s Fizzical Fun

What You'll Need

  • Hot Water
  • Cold Water
  • Bicarbonate of Soda
  • Heatproof Bowl
  • 45 mins
  • Ages 4 - 7
  • Inside
  • A Little Messy
Bubbles come
when the water’s hot,
but what happens
When it’s not?

Getting Started:

• Watch the bowl as Mum or Dad pours in some boiling water from the kettle.
• Now sprinkle in a teaspoon of bicarbonate of soda–be careful, remember the water is very hot! Now watch what happens.
• Now do the same thing with cold water. What happens this time?

Did You Know:

When bicarbonate of soda comes into contact with hot water it releases carbon dioxide gas, which causes it to bubble, froth and foam. When you mix it with cold water nothing happens at all.


An easy, fizzy science experiment for kids that requires only a few commonly found household ingredients. This science experiments, which uses Bicarbonate of Soda teaches children about chemical reactions. Kids love science. Their gasps as they witness a chemical reaction or surprising change is the best way to set their minds off into a flurry of questions and wanting to know more.

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