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Which of the following subatomic particles has the least amount of mass?
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2. Atoms & Elements
Subatomic Particles
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Which of the following lists correctly identifies the three main types of subatomic particles found in atoms?
A
Neutrons, positrons, and electrons
B
Protons, neutrons, and electrons
C
Electrons, muons, and protons
D
Protons, photons, and electrons
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Recall that atoms are composed of three main types of subatomic particles: protons, neutrons, and electrons.
Understand the role of each particle: protons carry a positive charge, neutrons are neutral (no charge), and electrons carry a negative charge.
Identify that positrons are not a fundamental part of atoms; they are the antimatter counterpart of electrons and do not normally exist inside atoms.
Recognize that muons are elementary particles similar to electrons but are not components of atoms under normal conditions.
Note that photons are particles of light and electromagnetic radiation, not subatomic particles within atoms.
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