Find the answer below
Bet your knowledge and answer
Hydrogen is a chemical element with symbol H and atomic number 1. Hydrogen is the lightest element on the periodic table. It is the most abundant chemical substance in the Universe, constituting roughly 75% of all mass. In 1766–81, Henry Cavendish was the first to recognize that hydrogen gas was a discrete substance, and that it produces water when burned. In Greek, hydrogen means "water-former".
Answer time 0s (0s). 44% have previously answered correct on this question. The question was created 2008-04-09.
The use of this metal and chemical element can be traced back to 3,500 BC. Which chemical element is number 28 in the Periodic Table?
We breathe this chemical element every day and with each breath we take. Which number in the periodic table has oxygen?
Which of the following countries was not one of the original members of the European Coal and Steel Community, the predecessor to the EU?
Which of the following children's diseases can be dangerous if you are pregnant?
In which part of Italy does the criminal syndicate Cosa Nostra originate?