Atomic Structure Quiz
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5 questions, one answer each
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1. What two particles make up the nucleus of an atom?
- A. Protons and electrons
- B. Neutrons and electrons
- C. Protons and neutrons
- D. Positrons and neutrons
2. Carbon-12 and Carbon-14 are isotopes of carbon. What do they have in common?
- A. Same number of neutrons
- B. Same number of protons
- C. Same mass number
- D. Same number of electrons only, different protons
3. What is the relative charge of a neutron?
- A. +1
- B. −1
- C. 0
- D. +2
4. In Rutherford's alpha scattering experiment, what did the small number of strongly deflected alpha particles indicate?
- A. Atoms are mostly empty space
- B. There is a small, dense, positively charged nucleus
- C. Electrons are embedded throughout the atom
- D. Neutrons repel alpha particles
5. An atom loses two outer electrons. What is the result?
- A. A neutral atom
- B. A negative ion
- C. A positive ion with charge +2
- D. An isotope