Periodic table

I only have 1 proton and I'm needed to make water.

I am the head of the carbon family, called the basis of life.

I am a noble gas used to make cool signs

I am found floating around outside of the nucleus

I have an atomic weight of 24.30 and I'm used in fireworks.

I am 2 or more elements held together by chemical bonds.

I have 11 protons used to make salt

I created the periodic table

Matter that is only one kind of atom

I am two or more elements mixed together not chemically bonded