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4. What is an atom composed of?

A. Matter
B. Protons, neutrons, and electrons
C. Mixtures
D. Compounds


Sagot :

Final answer:

Atoms are composed of protons, neutrons, and electrons, the fundamental building blocks of matter.


Explanation:

Atoms are composed of three main subatomic particles: protons, neutrons, and electrons. Protons and neutrons are found in the nucleus, while electrons orbit around the nucleus. Atoms are the smallest units of an element that possess all the element's properties.


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