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Questions and Answers
Which particles make up an atom?
Which particles make up an atom?
- Neutrons, electrons, and positrons
- Protons, neutrons, and photons
- Protons, neutrons, and electrons (correct)
- Protons, electrons, and positrons
What is the electrical charge of protons?
What is the electrical charge of protons?
- Neutral
- Positive (correct)
- Negative
- Variable
What is the electrical charge of electrons?
What is the electrical charge of electrons?
- Positive
- Neutral
- Variable
- Negative (correct)
What is the role of neutrons in an atom?
What is the role of neutrons in an atom?
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How is nuclear energy released?
How is nuclear energy released?
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Study Notes
Atomic Structure
- An atom is composed of three main particles: protons, neutrons, and electrons.
Protons
- Protons are positively charged particles that reside in the nucleus (central part) of an atom.
- Protons have an electrical charge of +1 elementary charge.
Electrons
- Electrons are negatively charged particles that orbit around the nucleus of an atom.
- Electrons have an electrical charge of -1 elementary charge.
Neutrons
- Neutrons are particles with no electrical charge that reside in the nucleus of an atom along with protons.
- The role of neutrons is to stabilize the nucleus by balancing the positive charge of protons.
Nuclear Energy
- Nuclear energy is released through nuclear reactions, such as nuclear fission or fusion.
- These reactions involve the splitting or combining of atomic nuclei, resulting in a significant release of energy.
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