How to do Fireworks in a jar science experiment

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This simple fun science experiment can be done with items from your pantry!

You will need:

1 x empty jar
drops of food colouring
warm water
3 tbsp vegetable oil

Fill the jar about 3/4 full with warm water from the tap.

In a separate bowl or dish, place three tablespoons (approx) of vegetable oil.

Carefully put drops of food colouring into the oil.

Mix it all gently with a fork, just enough to disperse the food colouring a little bit. You'll notice it doesn't mix with the oil, it just breaks up into smaller dots.

Now pour the oily and colour mixture into the warm water in your jar.

Watch as the coloured drops sink down into the water and mix together creating a firework effect.
Why is it so?

It's to do with the density of each liquid. The food colouring will dissolve into the water, but the oil won't. By mixing the oil and food colouring together first, you slow the mixing process that would normally happen with the water and the food colouring. The food colouring drops down into the water (because it is denser than the oil) while the oil stays on top of the water (water is also denser than oil). When the food colouring eventually starts to mix with the water, it creates a tiny explosion, like a firework.

Be sure to visit the Kidspot website for fun activities for kids, easy crafts, rainy day activities, dress ups, colouring pages, party games and science experiments

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I saw some people saying the experiment didn't work just make sure the water isnt too hot and with the oil and food coloring pour the oil and the food coloring SLOWLY for it to work if you pour it too fast the experiment wont work hope this helps :)

ayariba

For those saying it didnt work, we added way less food coloring and it worked like a charm! I just did 3 drops and then stirred it to make smaller drops :)

isyllae.c