This question is about methane. Look at the diagram, then read the text below. Unscramble each set of letters in bold, and write the correct word on each line.

...
A (eleclomu) . of methane consists of one atom of carbon bonded
to four hydrogen atoms. The atoms (ahres) .
. electrons from their
outer shells to make the bonds. The outer shells (povlare) .
. . Each
hydrogen atom shares one of the four outer electrons of the carbon atom. The carbon
atom becomes the (ntcree).
. of the methane molecule. A covalent
single bond is made up of two electrons. It can be represented as a (genlis) ...
line in a diagram.