What is the distinguishing characteristic of what we call ordinary matter (such as the matter that makes up stars, planets, and people)?

Question

Quizplus · Accepted Answer

Ordinary matter is characterized by its atomic and/or ionic structure, which consists of protons and neutrons in the nucleus, surrounded by electrons. This is a defining feature of all atoms, molecules, and compounds that make up the world around us. Options A and B are not unique to ordinary matter, as other types of matter (such as dark matter) can also emit light or interact through gravity. Option D refers to a type of hypothetical particle that has yet to be observed or detected.

What Is the Distinguishing Characteristic of What We Call Ordinary