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Questions and Answers
What is the commonly used term for the particles consisting of protons and neutrons in a nucleus?
What is the commonly used term for the particles consisting of protons and neutrons in a nucleus?
- Electrons
- Photons
- Isotopes
- Nucleons (correct)
What is the term for the number of protons in a nucleus?
What is the term for the number of protons in a nucleus?
- Mass defect
- Atomic number (correct)
- Atomic mass number
- Atomic weight
What does the atomic mass number represent?
What does the atomic mass number represent?
- Energy level of a nucleus
- Number of electrons in a nucleus
- Number of isotopes in a nucleus
- Total number of nucleons in a nucleus (correct)
Who were the first scientists to propose that matter is made of indivisible parts called atoms?
Who were the first scientists to propose that matter is made of indivisible parts called atoms?
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Who discovered electrons in 1887, disproving the indestructibility of atoms proposed by Dalton?
Who discovered electrons in 1887, disproving the indestructibility of atoms proposed by Dalton?
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What did Ernest Rutherford discover about the structure of an atom?
What did Ernest Rutherford discover about the structure of an atom?
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What did Niels Bohr contribute to the atomic model?
What did Niels Bohr contribute to the atomic model?
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What did Greek philosophers Leucippus and Democritus propose about matter?
What did Greek philosophers Leucippus and Democritus propose about matter?
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