Hydrogen is normally found as a colourless gas, in which hydrogen atoms combine together to give hydrogen molecules, H 2 .
(Hydrogen; is found; as a colourless gas, in which hydrogen atoms combine together to give hydrogen molecules, H 2; T:normally) (hydrogen atoms; combine; together; to give hydrogen molecules; L:a colourless gas) Context(hydrogen atoms combine,List([57, 79))):(hydrogen atoms; combine to give; hydrogen molecules)
hydrogen atoms combine,List([57, 79))
Hydrogen hydrogen atoms hydrogen atoms
is found combine combine to give
as a colourless gas, in which hydrogen atoms combine together to give hydrogen molecules, H 2 T:normally
together to give hydrogen molecules L:a colourless gas
hydrogen molecules