A pure substance
A)always has the same elemental composition.
B)is composed of more than one element.
C)can be broken into its components by physical means.
D)is chemically inert.
E)changes color when placed in bright sunlight.

Question

Quizplus · Accepted Answer

A pure substance is defined as a material that is composed of only one type of particle, whether it is an atom or a molecule. Therefore, it always has the same elemental composition.

A Pure Substance