Formation of Matter:

Protons and eletrons start to form a cloud of hydrogen. This cloud has LOADS of mass and are GIGANTIC. Due to gravity, the atoms around it get attracted to the cloud too. But there is a repulsion between atoms which gets them not into each other. These atoms of hydrogen get attracted to each othe...

Philosophical Atomism led to the development of early scientific atomic theory, modern science has shown that atoms in the chemical sense are actually composed of smaller particles (electrons, neutrons and protons), and that these in turn are composed of even more fundamental particles called qua...

• This makes it the most abundant element, by mass, in the body. Much of that oxygen is part of water, H2O. 
• Although there are more hydrogen atoms in the body than oxygen atoms, they account for significantly less mass. 
• Oxygen is also the most abundan...