Lava lamps

To start off with the lava lamp, know the oil in the lava lamp stays above the water because the oil is lighter than the water or, more specifically, less dense than water. The oil and water do not mix because of something called “intermolecular polarity.” Molecular polarity basically means that water molecules are attracted to other water molecules. They get along fine, and can loosely bond together (drops.) This is similar to magnets that are attracted to each other. Oil molecules are attracted to other oil molecules, they get along fine as well. But the structures of the two molecules do not allow them to bond together.

When we added the tablet it sank to the bottom and started dissolving and creating a gas. As the gas bubbles it rose

and they took some of the colored water with them. When the blob of water reached the top, the gas escaped and down

went into the water.

I found it easy to understand the physics of the lava lamp because we had it explained well your teacher.

I found it hard to remember what order the ingredients because the fact that there was quite a lot of ingredients.

Next time I will try harder, do things faster and try to make one at home.