Question

What type of a substance is steel?

• A. A solid - liquid heterogeneous mixture.
• B. A solid - solid heterogeneous mixture.
• C. A solid - solid homogeneous mixture
• D. A pure substance

Answer 1

The correct option is C A solid - solid homogeneous mixture

Steel is the most common metal alloy in the world. In its simplest form, it consists of iron and varying amounts of carbon and both of them are solids. Homogeneous mixtures refers to compositions that are the same throughout. Hence, it is a homogeneous mixture of solids as steel is uniform in its composition.