Hydrogen.
When hydrogen is attached to a more electronegative element, it tends to become more polarized due to the higher electronegativity difference. This can result in the hydrogen atom carrying a partial positive charge, making it more likely to participate in hydrogen bonding or interact with other electronegative species.
Carbon is an element. It does not contain any chemicals but with the exception of hydrogen, is part of more chemicals than any other element.
No, sodium hydrogen carbonate is a compound. If a substance has more than one element mentioned in its name (this one has three) it is not an element.
In the element oxygen.
Hydrogen will increase the acidity of a solution, otherwise know as pH. the lower the pH the higher the acidity. Adding carbon dioxide (breathe through a straw) will reverse the effects and increase the pH, making it more basic.
Well, if you want to get technical, EVERY element is different from every other element; each is unique. Hydrogen is the "simplest" element, having only one proton (and very rarely, one neutron) in the nucleus; every other element has two or more protons and usually as many or more neutrons as protons. Perhaps that's the difference you're looking for; hydrogen normally doesn't have ANY neutrons, while every other element always has some.
Neutrons in the nucleus, so you have isotopes of the same element, For example hydrogen, deuterium and tritium.
There are many 118 different elements and even more compounds, but the main compound that you will see is water which is made out of 1 Oxygen element and 2 Hydrogen element.
Hydrogen does not get along with halogens such as fluorine, chlorine, bromine, and iodine. These elements are highly reactive and tend to form compounds with hydrogen, such as hydrogen fluoride or hydrogen chloride.
Asssuming the Universe began with the Big Bang, it is thought that the first element formed, by colliding quarks and other sub-atomic particles, was hydrogen - the lightest of all the elements.
Hydrogen is not a man-made element but one that exists in nature naturally. It was discovered by Henry Cavendish in in 1766. So the question of "who made the hydrogen" atom is more philosophy then science.
The most abundant element in the Universe is Hydrogen.