The Atomic Model Questions with Solutions

The Atomic Model

Atomic 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.