Make your own lava lamp at home!
name: Released CO2 gas lifts denser phase to the lighter one.
How to Make a LAVA LAMP Easy Kids Science Experiments
How to Make a Lava Lamp the Easy Way
How To Make a Simple Lava Lamp At Home
⬤ Cool Science Experiments To Do At Home: Make A Homemade Lava Lamp ⬤
by Bored On Monday
Wear eye protection goggles.
Always follow general safety
recommendations. Please note that conducting chemistry
experiments you must comply with the relevant legal procedures in
3NaHCO3 + C6H8O7 → 3CO2 + 3H2O + Na3C6H5O7
- To perform this experiment, prepare a plastic bottle, vegetable oil, food coloring, water and fizzing tablets like aspirin or Alka-Seltzer.
- Pour some oil into the bottle (about 1/3).
- Fill the rest of the volume with water.
- Add a few drops of food coloring.
- Break the tablet into a few parts. Drop one of them into the bottle.
- The tablet starts fizzing and the released gas catches some colored water to the oil phase providing the lava-lamp effect. To keep it going add another piece of the tablet.
Since oil and water have different densities they do not mix with each other. Oil is lighter than water and lies on top of the water. The added tablet sinks to the bottle bottom and starts dissolving releasing CO2 gas. As a rule such tablets contain citric acid and baking soda. When these components come into contact with water a chemical reaction producing sodium citrate, water and carbon dioxide begins. The gas bubble catches some water and delivers it to the oil phase. When the gas reaches the surface it escapes and there are no more forces to keep water in the lighter phase. The water blob settles under the action of gravity.