· Hydrogen is the most common element in the universe, ever. This is due to its very simple structure.
· Formation of new element takes place in dense gas clouds. (Model)
· Dense gas clouds are constantly “swirling and moving”.
· Generally, atoms in the dense clouds may become plasma.
· Plasma is a mixture of atoms, ions and electrons.
· Lighter elements form heavier ones in dense gas clouds via fusion.
· The temperature of gas clouds can vary between 10 and 100 Kelvin. We know this via replicating the reactions that occur in the clouds.
· Gas clouds do not have a constant density.
· There’s a gravitational field in the centre of clouds forming great temperature and pressure at the core.
· Fusion is the joining of 2 nuclei.
· When fusion occurs, energy is released, provoking more fusion to occur. However this is not classed as a chain reaction.
· First reactions in gas clouds often include fusion of Hydrogen forming Helium, releasing gamma.
2H1 + 3H1 >> 4He2 + g
· Fusion can occur between any nuclei.
· Heavy weight stars have higher temperatures because as they’re heavier, they have a greater gravitational field making them a better element manufacturer.
· The reason cores are FE is because Iron production doesn’t release any energy as a bi product in order to provoke further fusion to occur.
· Bigger stars are unstable and may cause SuperNovas.
· Our sun is a light weighted star.