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INTRODUCTION, the lava lamp also can be use when our house has no electricity. Next , the lava lamp science project hypothesis talks about the density of liquids and the solubility of two liquids which we combine in the project. Moreover , in the lava lamp liquids are close to each other in density that do not dissolved to each other. However , the acid reacts with baking soda, producing bubbles of carbon dioxide gas that mixed with vinegar solution which are less dense than the oil rise. OBIECTIVE: the lava lamp experiment works on the principle of density and polarity. let us see how to make a lava lamp. Methodology: lava lamps, lava lamp science project hypothesis talks about the density of two liquids and the soulibility of the two same liquids. In lava lamp, we have liquids that are very close to each other insoluble in each other. many people often end up using oil and water because they are insoluble in each other. but two liquids have densities that are very different from one another.so you need to find two liquids with very close densitues for the experiment to work. RESULTS: they stick to the water droplets. The water and gas combination is less dense than oil, and hence they rise to the top pf the flask. the real lava lamps use polar and nonpolar liquids, just like the polarity. CONCLUSION : initially, lava lamps were considered to be unusual and luxurious items,but over time, they have become accesorized products.