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The majority of an atom's mass comes from which two subatomic particles?
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2. Atoms & Elements
Subatomic Particles
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Where is the smallest negatively-charged particle found in an atom?
A
Attached to protons
B
In the electron cloud surrounding the nucleus
C
In the neutron shell
D
Inside the nucleus
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Understand the structure of an atom: it consists of a nucleus containing protons and neutrons, and an electron cloud surrounding the nucleus.
Recall the charges of subatomic particles: protons are positively charged, neutrons have no charge, and electrons are negatively charged.
Identify the location of each particle: protons and neutrons are inside the nucleus, while electrons are found in the electron cloud around the nucleus.
Recognize that the smallest negatively charged particle is the electron, which is not attached to protons or inside the nucleus but exists in the electron cloud.
Conclude that the smallest negatively charged particle is found in the electron cloud surrounding the nucleus.
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