Question

What is the definition of a trace?

A. A very small amount
B. A combination of an element with oxygen
C. A mineral containing sulfur
D. A quantifiable amount
E. A very large amount

Answer 1

A trace is a very small amount. In chemistry, it refers to small concentrations of substances.

Step-by-step explanation:

The definition of a trace is A. A very small amount. In chemistry, a trace refers to a small quantity or concentration of a substance.

It is commonly used to express concentrations of elements or pollutants in parts per million or parts per billion.