When atoms combine to form compounds, they gain, lose, or share

it depends upon the atomic number

Explanation:

if the atomic number is below 4 it will lose electrons

if the atomic number is above 4 it will gain electrons

if the atomic number is 4 it will share its electrons with other atom of the same element make covalent bonds

ex; carbon

electron

Explanation:When atoms combine to form compounds, they gain,lose,or share *electron.*

not too sure but maybe in the hot springs.