Question

Identify the following as either physical or chemical properties. a. Zinc metal can be shaped into many different forms by hammering b. Sliver tarnishes, forming black silver sulfide c. Sodium metal is soft enough to cut with a butter knife d. Gold melts as 1064°C

Answer 1

a. Zinc metal can be shaped into many different forms by hammering.

Property: Physical (This is a physical property because it describes how a substance can change its shape through a physical process, without undergoing a chemical change.)
b. Silver tarnishes, forming black silver sulfide.

Property: Chemical (This is a chemical property because it describes a reaction that results in the formation of a new substance, silver sulfide, due to a chemical change.)
c. Sodium metal is soft enough to cut with a butter knife.

Property: Physical (This is a physical property because it describes a characteristic related to the material's physical state and behavior under mechanical stress.)
d. Gold melts at 1064°C.

Property: Physical (This is a physical property because it describes the temperature at which a substance changes from a solid to a liquid state, which is a physical change.)