3 An ideal monatomic gas, consisting of 2.8 mol of
volume 8.6x10-2 m² , expands adiabatically. The
initial and final temperatures are 75 °C and -85
°C.
What is the final volume of the gas ?

It won't lose or gain electrons if it's a covalent bond it shares the electrons with another atom or atoms. if it is an ionic bond it will lose the 3 electrons on the outer shell and become a positively charged ion.  credit goes to @sunshinebaby of answers.yahoo.com.

The rocks expand when there hot/warm  and contract when they are cold.

From negative to negative