Average velocity x= 1.09m to x= 2.55m in 12.8s

d=x2-x1=2.55-1.09=1.46 m

v=d÷t =1.46÷12.8=0.114 m/sec

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 answer is that they are composed mostly of liquid water.