WHERE DID MOST OF THE EARTHS ATOMS COME FROM

Earth formed from debris orbiting around our sun about 4 billion years ago. That is also the guessed age of the sun. The story really begins with the Big Bang nearly 14 billion years ago, which spewed hydrogen atoms throughout the universe

the cells uses some of the atoms of the glucose molecules to atp molecules. the atoms of the glucose molecules will then be converted into energy which will be eventually stored in atp. the energy produced which are stored in atp are coming from the glucose’s chemical bonds.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds