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1. Crash Bang! - Exciting experiments for you to try at home...
Edible Fake Blood
Very useful at Halloween, and sweeter than the real thing!
What you do
 100g cornflour
100 ml water
Bowl or jug
Spoon to mix with
4 tablespoons (about 80 ml) golden syrup
Red food colouring
Green food colouring
What to do:
1. Make sure that your equipment and the surface you are working on are clean, so that it's quite safe to eat the 'blood' if you want to.
2. Mix the cornflour and the water together in a bowl or jug. (If you're wondering why the cornflour behaves the way it does, take a look at the Custard Gone Crazy! experiment on this website.)
3. Stir in the golden syrup.
4. Add two teaspoons of red food colouring and a few drops of green food colouring. Does your blood look realistic enough yet? You will need to play around with the quantities of red and green food colouring. Adding more red food colouring will make the blood look more pink and adding more green will give the blood a more browny colour.
5. Add a drop of peppermint essence to give the blood a lovely minty taste.
6. Use to decorate Halloween cakes or as a realistic addition to a costume.
What's happening?
What makes blood that wonderful vampire-attracting colour? Real blood gets its colour from haemoglobin, a protein containing iron that's found in red blood cells. These cells are pretty essential for human life as they carry oxygen from our lungs to tissues all around the body.
Blood appears red because when white light falls on it, it absorbs all the colours except red, which it reflects.
Red food colouring is more of a pinky colour than blood, so you need to add green to remove the pink tinge. Green food colouring absorbs all colours apart from green. When you mix green with the red colouring it absorbs some of the red light that would have been reflected, giving your fake blood that realistic brown tinge.
Try this
Put some of your fake blood into a glass jar in the fridge and leave it for a few weeks, checking every couple of days. Write down your predictions - what you think will happen to the mixture. Does it behave the way you expected?
This activity came from the Edible Fake Blood activity in the Little Book of Experiments
More simply horrible recipes can be found if you visit our Goth house page. WooooOOOOOO!
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This week we’ve got a fun Halloween pack consisting of a pack of white skull balloons, a spooky glow-in-the-dark skull pendant and a Bad Taste Bear keyring.
