Hydrogens chemical sign is 'H'.
2 Hydrogens, 1 Oxygen.
ch4 is the chemical symbol for methane it contains 1 carbon and 4 hydrogens.
H2O is the chemical formula for water.
When oxygen combines with 2 hydrogens it makes water.
Methane has a chemical formula of CH4. this means that it has one carbon with 4 hydrogens. As you see it is mainly hydrogen, but the carbon weighs more than the 4 hydrogens.
It has two H's and one O. Or two hydrogens and one oxygen.
Covalent bonds between the hydrogens and central oxygen
Because on one side you have two hydrogens and two oxygens and on the other side of the equation you have two hydrogens and only one oxygen.
H2O is 2 hydrogens plus 1 oxygen and that makes the chemical formula for water.
Water is not an element, it is a compound composed of oxygen and hydrogen. The chemical formula for it is H2O. That is 2 hydrogens and 1 oxygen atoms combined.
The chemical makeup of glucose is C6H12O6.
The chemical formula of octane is C8H18.