Halloween can be spooky and scary but it can also be SCIENTRIFFIC!

Make this vampire blood cocktail ... but you can’t drink it as it is purely for science purposes only!

Glass
Golden syrup
Cooking oil
Water
Red food colouring

Carefully pour some syrup into the glass until you have a layer about three centimetres deep.

Next, pour in three centimetres of cooking oil.

Finally, add a couple of drops of red food colouring to three centimetres of water and pour the coloured water into the glass.

You have a creepy vampire cocktail!

When you pour the cooking oil into the glass, it sits on top of the syrup. When you pour the water in, it sits between the syrup and the oil.

The syrup stays at the bottom of the glass because it has a greater ‘density’ than water.

Sometimes, it’s not just how heavy an object is that’s important, but also how much space it takes up. Scientists use the word density to describe this.

The liquids stay separate because liquids with lesser densities float on top of liquids with greater densities, so long as they do not mix. Oil and water do not mix and water has a greater density than oil.

Don't drink your vampire cocktail. It's strictly for science purposes!