Bubbles are made of an oily substance from. Oily substances like other oily substances just like water likes water. Oil and water don't like mixing, so bubbles stick together and exclude water. The chemistry is similar to how people like to mix with groups of friends, but they don't like to mix with strangers. Soap has an oily bit it sticks into grease and grime. It also has an acid bit on the other end that likes water. Because you have these two parts on one bit of soap, you manage to drag the grease into the water and make these 2 things that don't like to mix, mix together - which is how soap works.

The reason you hear those sounds on TV is to make it more interesting. We know dinosaurs probably made noises because they had very good sense of hearing. If you look at dinosaur fossil skulls, you can trace their ear canals and work out where their ears would have been and the kinds of sound they would have responded to. If they could hear sounds, they could probably make sounds. In the late 90's scientists put a fossil through a CT scanner to look at the bone structure. The headpiece was a series of intricately connected tubes a bit like organ pipes. They analysed the structure of these canals and airways, and used a computer to model what would happen if air were blown past. They found that the dinosaur could probably have produced low pitched rumbling noises that could have carried a long way. So what we use for dinosaur sounds on TV is what can be inferred from studying the shape of their fossilised remains, with a bit of artistic license thrown in.

Aspartame is made when the amino acids phenylalanine and alanine are glued together and a methanol group is added on the side. Aspartame stimulates sweetness receptors on the tongue. But when you eat it, it breaks down releasing the 2 amino acids - alanine and phenylalanine, and the methanol. Methanol is poisonous to the brain, so people are concerned that it might make nervous problems worse. To test this, they looked at epileptics. Half were given a harmless placebo and half were given aspartame. There was no increase in the number of seizures amongst the people given aspartame so it probably doesn't cause, or exacerbate epilepsy. It might pickle your brain though, if you ate it in large enough quantities.