oshc activities
Aquatic Adventure / Ocean Fizz Bath Bombs

Ocean Fizz Bath Bombs

Older children mix and mould blue fizzing bath bombs with a small sea creature toy hidden inside, exploring a simple acid and base reaction.

How to run it

  1. Put on gloves and mix bicarb soda and citric acid in a bowl.
  2. Add a few drops of blue food colouring and a tiny spray of water until the mix holds together.
  3. Press half into a mould, add a small sea creature toy and fill the mould.
  4. Leave to dry for several hours before unmoulding.
  5. Drop a test bath bomb into a tub of water to watch the fizzing reaction.

You will need

  • bicarb soda
  • citric acid
  • blue food colouring
  • spray bottle of water
  • bath bomb moulds
  • small sea creature toys
  • gloves
  • mixing bowls
Make it easier or harderYounger children can watch and drop pre-made bombs into water; older children can test different ratios.
SafetyWear gloves, keep powders away from eyes and wash hands afterwards; skip added fragrance for children with sensitive skin.
My Time Our Place · Outcome 4Children follow a process, observe a chemical reaction and explain what they see.

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