Answer
a. physical property
b. chemical property
c. physical property
d. chemical property
e. physical property
Work Step by Step
a. Potassium chloride dissolve in water. This sentence describes physical property as potassium chloride and water retain their chemical identity. They can be separated from each other using other physical changes.
b. Seashell, or calcium carbonate fizz when immersed in vinegar. This sentence describes chemical property of seashell to enter in chemical reaction with vinegar. As a result of this chemical reaction seashell (calcium carbonate) do not retain its chemical identity but a new gaseous substance is formed.
c. The gas hydrogen sulfide smells like rotten eggs. This statement describes a physical property of hydrogen sulfide. Hydrogen sulfide retain its chemical identity when you describe its smell.
d. The burning of fine steel wool ( Fe) in the air describes a chemical property of fine steel wool to enter in chemical reaction with the oxygen in the air. As a result of this process fine steel wool (Fe) changes its chemical identity.
e. Pure water freezes at $0^{0}$C. This statement describes a physical property, as water changes its form from liquid to solid ( ice). In this process water retains its chemical identity.
