How To Make A Lava Lamp

Hey guys! I'm gonna share with you how to make a lava lamp. :)
This type of lava lamp only require materials that are found in the kitchen, so it's homemade lava lamp.

You need:
-An empty bottle
-Food colouring(any colour you want)
-Cooking oil
-Vinegar
-Baking soda

Method:
1. Pour cooking oil into the bottle so that it is about three quarters full.
2. Next, pour vinegar into the bottle. Don't fill the bottle to the brim. Leave about 6cm of space from the mouth of the bottle.
3. Add a few drops of colouring.
4. Then slowly add 1 or 2 teaspoons of baking soda. (If you add 1 teaspoon then the colouring starts rising, don't add anymore!)

And you are done! :D

Source from: my friend
I hope it worked :)