A sample of matter that contains atoms that all have the same number of protons is
A) an element.
B) a substance.
C) a compound.
D) a homogeneous mixture.

Name: A sample of matter that contains atoms that all have the same number of protons is A) an element. B) a substance. C) a compound. D) a homogeneous mixture.
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Quizplus · Accepted Answer

An element is defined as a pure substance consisting of only one type of atom, characterized by its specific number of protons in the atomic nuclei.

A Sample of Matter That Contains Atoms That All Have