Multi-Select

Select all of the true statements about melting points.

a. The melting point range of a pure substance is the same as the range for an impure sample of the substance

b. A pure substance has a narrow range of melting temperatures

c. All solids have melting points below room temperature.

d. The melting point of a substance is determined by heating the substance in a beaker using a Bunsen burner.

e. The melting point of a pure substance is an exact temperature measured to 3 or more decimal places.