cart Shopping Cart cart(0)

Dancing sultanas experiment

You will need:

  • 10 Sultanas or raisins
  • 1 litre of Soda water
  • 1 Plastic container

    Dancing sultanas - materials needed



  1. Pour the soda water into the container.

    Dancing sultanas - pouring in soda water
  2. Gently add the sultanas one at a time to the soda water.

    Dancing sultanas - adding a sultana to soda water
  3. Watch them float to the surface and drop down over and over again.

    Dancing sultanas - final result
  4. When will this movement stop? Why?
Want more ideas for teaching science?

Subscribe to the FizzicsEd Podcast!

Listen to FizzicsEd on Apple Podcasts

FizzicsEd podcast available on Stitcher

What is going on?

Soda water contains a large amount of dissolved carbon dioxide. Pouring the soda water into the container helped to release this gas in the form of bubbles. The bubbles are less dense that soda water, so they rise to the surface.

The bubbles connect themselves to the sides of the sultanas, providing a buoyant force to help to raise the sultanas to the surface. On reaching the surface the bubbles pop, thereby reducing the buoyant force on the sultanas and they fall back down again.

Marine archaeologists fill bags with gas so they can raise shipwrecks and sunken treasure!
Similar experiment: Make a simple lava lamp

Investigating floating and sinking?

Have us visit your school! The working with water school workshop is designed for younger students to get their head around why things float and think.

btn more
Be Amazing Book Front Cover; Ben Newsome, teacher & founder of Fizzics Education. Be Amazing -how to teach science the way primary kids love
Be Amazing!
How to teach science, the way primary kids love

Read more about Be Amazing
Join our newsletter for more science teaching thoughts & ideas

Join the Fizzics newsletter

Back to force & movement experiments

  • Learn about buoyancy & pressure
  • Fun science for the classroom or home!

    science kits for sale
wheel spin during a Fizzics science show

Forces, Friction & Movement School Science Visit

  • Explore rotational inertia & more
  • Hands-on science for primary students
read morebook now

>100 Free Science Experiments on this site!

Coloured shadows
  • Experiments to colour your class!
  • Easy & fun
read more
skeleton and student
  • Make fake blood & more!
  • Biology made simple
read more
electricity experiments
  • Circuit science for kids
  • Cheap materials found easily
read more
Sugar and skittles dissolving in water experiment
  • Creative chemical concoctions!
  • Safe and engaging for kids
read more

School Science Visits: 

  • Highly engaging & curriculum-linked
  • Additional Teacher Support Resources
  • Professional visits in-class or via video conference
  • Both Primary School & High School science incursions
Call 1300 856 828 or use this form to discuss or make a show booking for your school!

Love Science?

Signup to our fortnightly email! Learn more

Contact us

1300 856 828

Unit 10/55 Fourth Ave
Blacktown, NSW 2148, Australia
facebook-icon Apple Podcast Icon  twitter-icon
linkedin-icon youtube-icon   pinterest-icon