A. Water boils to produce steam at 100° C (252)
B. Water Dissolves sugar
C. Water produces gas with sodium metal
D. Water and all separate when combined
a. Water boils to produce steam at 100°C - This is a phase change (from liquid to gas) and not a chemical reaction of water.
b. Water dissolves sugar - This is a physical change, not a chemical reaction of water.
c. Water produces gas with sodium metal - This reaction involves the chemical reaction of water with sodium metal to produce hydrogen gas.
d. Water and oil separate when combined - This is a physical separation, not a chemical reaction of water.
Therefore, the Correct Answer is C.