Which of the following is an example of a phase change from solid to liquid? A. Water condensing
B. Water evaporating
C. Water freezing
D. Ice melting

Which substance absorbs 58.16 kj of energy when 3.11 mol vaporizes? a)ch4 b)h2s c)co2 d)nacl

Complete the table for ion charge based upon their losing or gaining electrons in the outer shell. (use the periodic table as necessary.) group most likely ionic charge # of valence electrons i +1 ii +2 iii +3 iv +4 or -4 v -3 vi -2 vii -1 viii 0

What does the symbol (–hfus) indicate in a phase change?