Lava lamp materials: oil, water, transparent bottle, pigment, effervescent tablets. Experimental steps: Pour oil and water (the ratio is about 1:4) into a cup and wait for it to delaminate. Drop a few drops of pigment and add effervescent tablets. Principle: Effervescent tablets disintegrate rapidly when put into water, producing a large amount of carbon dioxide. Bubbles rush to the surface with pigments and water, which looks like magma jet, which is very magical and interesting.

Lava lamp materials: oil, water, transparent bottle, pigment, effervescent tablets. Experimental steps: Pour oil and water (the ratio is about 1:4) into a cup and let it separate layers. Drop a few drops of pigment and add effervescent tablets. Principle: Effervescent tablets disintegrate rapidly when put into water, producing a large amount of carbon dioxide. Bubbles rush to the surface with pigments and water, which looks like magma jet, which is very magical and interesting.