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Questions and Answers
What is the charge of a proton?
What is the charge of a proton?
- Neutral
- No charge
- Positive (correct)
- Negative
Where is most of the mass of an atom found?
Where is most of the mass of an atom found?
- In the electron cloud
- In the protons and neutrons (correct)
- In the electrons
- In the nucleus
What is the mass of an electron compared to a proton or neutron?
What is the mass of an electron compared to a proton or neutron?
- 1/1836 (correct)
- Greater
- 1/10
- Equal
Which subatomic particle has no charge?
Which subatomic particle has no charge?
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What does the electron cloud account for?
What does the electron cloud account for?
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What happens when an atom is in a neutral state?
What happens when an atom is in a neutral state?
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What occurs to the charge when an atom gains or loses electrons?
What occurs to the charge when an atom gains or loses electrons?
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When the net charge is negative, what does it indicate?
When the net charge is negative, what does it indicate?
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What are ions?
What are ions?
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What do the differences of each atom account for?
What do the differences of each atom account for?
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What identifies the atoms of a specific element?
What identifies the atoms of a specific element?
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Study Notes
Subatomic Particles
- The charge of a proton is positive.
Atomic Structure
- Most of the mass of an atom is found in the nucleus.
Electron, Proton, and Neutron
- The mass of an electron is significantly smaller compared to a proton or neutron.
- A neutron has no charge.
Electron Cloud
- The electron cloud accounts for the region around the nucleus where electrons are likely to be found.
Neutral Atoms
- When an atom is in a neutral state, it has an equal number of protons and electrons.
Ions
- When an atom gains or loses electrons, its net charge changes.
- A negative net charge indicates an excess of electrons.
- A positive net charge indicates a deficiency of electrons.
- Ions are atoms that have gained or lost electrons, resulting in a net charge.
Elements
- The differences in the number of protons, neutrons, and electrons account for the unique properties of each atom.
- The number of protons in an atom's nucleus identifies the atoms of a specific element.
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