Multiple Choice
What is the approximate mass of a proton?
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4. Atoms and Elements
Subatomic Particles (Simplified)
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Which set correctly lists the three major subatomic particles found in atoms (in a simplified model)?
A
Protons, neutrons, and electrons
B
Protons, neutrons, and photons
C
Protons, ions, and electrons
D
Neutrons, isotopes, and electrons
Verified step by step guidance1
Understand that atoms are composed of smaller particles called subatomic particles, which are fundamental to the structure of matter.
Recall the three major subatomic particles that make up an atom: protons, neutrons, and electrons.
Recognize that protons carry a positive charge, electrons carry a negative charge, and neutrons have no charge (they are neutral).
Identify that photons are particles of light, ions are charged atoms or molecules, and isotopes are variants of elements with different numbers of neutrons, so these are not subatomic particles.
Conclude that the correct set listing the three major subatomic particles is: protons, neutrons, and electrons.
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