Answer
Methane gas which I’m assuming it’s talking about would look something like this the O is an atom
O o. o o
O O O. O O. o
O o o o o o
They are spread far apart but diamond which I’m assuming solid would be like this
Oooooooooo
Oooooooooo
Oooooooooo
Oooooooooo
Oooooooooo
Where the atoms are closing packed together.