Exam (elaborations)
The Atomic Model Questions with Solutions
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Exam of 3 pages for the course Atom at Atom (The Atomic Model)
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The Atomic ModelAtomic Mass - answerThe mass of the protons plus the mass of the neutrons in the
nucleus of an atom.
Atomic Number - answerThe number of protons in the nucleus of an atom.
Ground State - answerLowest energy position of an electron in an atom.
Orbital - answerThe area around the nucleus of an atom where the probability of finding
an electron is greatest.
Photon - answerFixed amounts of energy in light.
Quantum - answerA fixed amount.
Quarks - answerParticles that make up neutrons and protons, classified as colors and
flavors.
Valence Electrons - answerElectrons in the outermost shell of the atom, capable of
taking part in chemical reactions.
Bohr's model of the atom included a positively charged ______ orbited by negatively
charged ______.
a. nucleus, protons
b. nucleus, electrons
c. neutrons, electrons
d. protons, electrons - answerb. nucleus, electrons.
Bohr found experimental evidence for his atomic model by studying ____.
a. the electron cloud
b. line spectra
c. quarks
d. atomic mass - answerb. line spectra.
Electrons in the outer shell are called ___.
a. stable electrons
b. unstable electrons
c. valence electrons - answerc. valence electrons.
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