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Lava lamp

Video on experiment:

What you need:

1) 3/4 glass of warm water

2)Vegetable oil

3)Some salt

4)(Optional) few drops of food colouring to have

"lava" effect

What to do?

First, pour oil in the water gently.

Allow some time for the oil to float on water

Next, sprinkle salt over the oil.

And then watch as magic happens :D

But... How does this magic work?

Firstly, the oil floats since it is less dense.Since the salt is denser than oil, it sinks down into the water. The salt dissolves into warm water and then the oil goes back up! With some food colouring, this will appear like a lava lamp :)

Thank you for your kind attention, Hope you have enjoyed the presentation :)

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