Question

only certain elements produce colorful flames. every substance containing the same metal gives the same flame color. at the same time, all the substances that are called nitrates do not produce the same flame color, nor do all the substances that are called chlorides or sulfates. the nonmetal elements—nitrogen, oxygen, sulfur, and chlorine—do not give rise to colors when placed in a flame. which do not produce the same flame color?

Explanation:

The text states that all substances called nitrates do not produce the same flame - color, and non - metal elements like oxygen, sulfur, and chlorine do not give rise to colors in a flame. Copper is a metal and substances with the same metal give the same flame color.

Answer:

nitrates, oxygen, sulfur, and chlorine