Christmas Crystals


It has taken many attempts to get these crystals to grow. The first time we tried nothing grew at all as the solution was not concentrated enough, the second time we made it too concentrated and the whole solution crystallised. The third time we grew this, and were quite impressed!

Photo taken with this.

What you need

3 cups of caster sugar

1 cup of water

A lolly stick or circle of wire. Or some string.

A Jar,

Sellotape.

Some sparkles  and/or food colouring( optional )

Instructions

Dissolve the sugar in the water, as soon as it is dissolved remove the heat and leave to cool a little bit. If you can get a bit more sugar to dissolve then thats a good thing. We want a saturated solution.

Pour the solution into a glass jar and suspend the lolly stick, we used some sellotape to hold it in place. Don’t let it touch the bottom or the sides. Alternatively you could tie some string to a pencil and rest the pencil on top of the jar with the string hanging in the jar.

You should see crystals start to form after a few days.

We made a lolly and a circle to hang on the Christmas tree. I was a bit disapppointed with the circle, but we will be trying again with a star!

The Science Bit

A crystal is a solid material with a naturally geometrically regular form. Some take millions of years to form, such as diamonds. The crystals we made above take just a few days.

Most minerals dissolved in water will form crystals given enough time and space. The shape of the crystal formed depends on the mineral’s molecule shape.

In the case of our sugar crystals there are two process at work.

Evaporation – the water evaporates slowly meaning the solution becomes more saturated, so the sugar molecules come out of solution and collect on the string/wire or stick.

Precipitation – the solution we made was very concentrated which means there was too much solute to remain dissolved in the water, therefore it starts to precipitate.

 

 

 

I added some pink sparkle and some peppermint flavouring to the lollypop to make it a bit Christmassy!

 

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Author: Emma Vanstone

Science Sparks, is a site dedicated to making Science fun for kids. I’d love you to follow me on my Google Profile+.

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26 Comments

  1. This is amazing! such a genius idea!!!!
    I might even try and convince husband to give it a go…baby still too little for this.

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    • Fun for adults too!

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  2. ooh I love this. Definitely going to try it with my little ones. Thanks for sharing. x

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    • Thank you, good luck with it x

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  3. wow how beautiful and magical. i guess xmas at your house will be a ‘bomb’, lol

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    • Ahhh, thank you. I do try hard. xx

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  4. Too cool! We just read a book about these being the entry for a Science Fair! It’s called My Blue Ribbon Day (or The Blue Ribbon Day). We’ll definitely have to try these sometime!

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    • Thank you. xx

      Post a Reply
    • awww, thanks. xx

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  5. That is really cool!

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  6. Love this idea! My boys will have tons of fun with this. So glad I found your blog (through ABC & 123) – I’m a new follower.

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    • So glad you liked it. x

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  7. They look great, especially with the pink. I’m a very impatient person but still I might try to make this ;)

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  8. My daughter approves of the one that looks like a bracelet!

    Thanks for linking up to Science Sunday (yes I am this late on commenting).

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  9. My kids have brought these home with the yoghurt pot and lollipop stick before.I’ll have to get them to try making a bracelet.

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  10. My kids would be beyond excited to make their own candy. And this is such as simple recipe!

    Post a Reply
    • is it simple, although it did take us a few goes!

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  1. Baby BornFree's Blog » Blog Archive » Never too young for Science - [...] created the most beautiful crystals [...]
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