TIMED TEST Put the following terms in order from smallest at the top to largest at the bottom.
living cells
tissue
organs
living things
amino acids
proteins

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

if you know your abc's you should be able to get your answer or just use google