The fundamental unit of matter found in the universe made of a nucleus of protons and neutrons and orbiting electrons.

🎲 Try a Random Question  |  Total Questions in Quiz: 42  |  🧠 Study this quiz with Flashcards
This question is part of a full practice quiz:
9th Grade Chemistry — practice the complete quiz, review flashcards, or try a random question.


1. The fundamental unit of matter found in the universe made of a nucleus of protons and neutrons and orbiting electrons.