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    Home » Science Experiments for Kids » Chemistry » Why is honeycomb full of bubbles?

    Why is honeycomb full of bubbles?

    May 11, 2012 By Emma Vanstone 12 Comments

    ‘Thank crunchie it’s Friday’ seems the perfect phrase for today’s experiment as it involves learning how to make honeycomb with our easy honeycomb recipe. Once you’ve made the honeycomb and learned about the science behind the bubbles the rest is up to you. Add melted chocolate, sprinkles, popping candy or anything else to make it an even tastier treat.

    Image taken from Snackable Science

    Easy Honeycomb Recipe

    Honeycomb ingredients

    100g of sugar

    1 table of water

    2 table spoons of golden syrup

    1 teaspoon of bicarbonate of soda

    How to make honeycomb

    1. Put all the ingredients except the bicarbonate of soda into a saucepan and place on a low heat

    2. Line a baking tray with silver foil.

    3. Stir the mixture until all the sugar has dissolved. Raise the heat slightly so that it bubbles, and stir occasionally until you cannot feel any sugar at the bottom of the pan.

    The Science of honeycomb, science sparks

    4. Take the pan off the heat.

    5. Add bicarbonate of soda and stir!

    5. Watch what happens – it should froth up with lots of lovely bubbles.

    6. Pour the mixture into your baking tray or into a mould.

    7. Allow to cool. When solid smash into tasty treats. Add any extra ingredients or crush and sprinkle over ice cream!

    honeycomb

    Why is honeycomb full of bubbles?

    The bicarbonate of soda breaks down with heat to release carbon dioxide gas. The gas causes the sugar and syrup mixture to froth and bubble. The bubbles become trapped in the mixture where they set as the mixture cools.

    This activity is one many delicious kitchen science experiments you can find in Snackable Science!

    Last Updated on February 10, 2021 by Emma Vanstone

    « Coin Poppers!
    How it all started… »

    Safety Notice

    Science Sparks ( Wild Sparks Enterprises Ltd ) are not liable for the actions of activity of any person who uses the information in this resource or in any of the suggested further resources. Science Sparks assume no liability with regard to injuries or damage to property that may occur as a result of using the information and carrying out the practical activities contained in this resource or in any of the suggested further resources.

    These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. The adult involved is fully responsible for ensuring that the activities are carried out safely.

    Reader Interactions

    Comments

    1. Clare

      May 11, 2012 at 7:54 am

      Hi, just discovered you, and I’m very excited! A quick question: if I don’t have golden syrup (hard to get in Switzerland) what could I use instead?
      Thanks.

      Reply
      • ScienceSparks

        May 11, 2012 at 8:46 pm

        Maybe corn syrup?

        Reply
        • seeherknit

          May 16, 2012 at 9:58 pm

          I wonder if this is like the hokey-pokey we came across while traveling in New Zealand? I can’t wait to try this.
          I’ve never seen golden syrup in the US before, but I haven’t looked. I have found a substitute at http://www.foodsubs.com/Syrups.html

          “Combine two parts light corn syrup plus one part molasses OR equal parts honey and corn syrup OR maple syrup (This is thinner, and not as sweet.) OR dark corn syrup (This is thinner and not as sweet as golden syrup. If you like, try reducing the corn syrup in a saucepan to thicken it.) OR light corn syrup (This is thinner and not as sweet or flavorful as golden syrup. If you like, try reducing the corn syrup in a saucepan to thicken it.) “

          Reply
    2. Pinkoddy

      May 11, 2012 at 8:25 am

      That looks tasty. I have voted for you both – best of luck.

      Reply
      • ScienceSparks

        May 11, 2012 at 12:17 pm

        Thank you so much! xx

        Reply
    3. would like to be a yummy mummy

      May 12, 2012 at 6:30 pm

      Well done for becoming a Mads finalist, you get my vote again. We have made honeycomb before once and really enjoyed it, you have made me think we should do it again…Poppy had great fun and I love the idea of something being scientific that you can eat with ice cream 🙂 xx

      Reply
      • ScienceSparks

        May 13, 2012 at 8:49 pm

        oh yes, i plan to eat mine with ice cream! Thanks so much for voting for us. x

        Reply
    4. Elaine (Littlesheep)

      May 22, 2012 at 8:02 pm

      We made this at my eldest’s birthday science party tonight – the boys all loved it 🙂 Thank you

      Reply

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