Which of the following are the same and which are different? a. a substance and a pure substance
b. a heterogeneous mixture and a solution
c. a substance and a mixture
d. a homogeneous mixture and a solution

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.