1. One difference between the motion of electrons in an atom and the motion of planets in the solar systems is
Question:
a. gravity holds the planets in orbit while centripetal force holds the electrons.
b. electron orbits are uniform, planetary orbits are not.
c. Brownian motion applies to planets but not electrons.
d. the orbit of a planet is constantly being accelerated.
e. All of the above apply to both planets and electrons.
2. The fundamental building block for all matter; the smallest representative sample of a substance that maintains chemical identity.
a. atom
b. element
c. molecule
d. electron
e. compound
3. Each electron shell corresponds to a different
a. electron.
b. element.
c. ion.
d. atom.
e. energy level.
4. What is an atom’s spectrum?
a. the total collection of photons an atom can reflect
b. sum of photons an atom will emit
c. the atomic mass of the atom
d. the atom’s place in the periodic table
e. the allowed orbit closest to the nucleus
5. In the periodic table of the elements, the heaviest element is located
a. at the top right corner.
b. in the center of the chart.
c. at the lower right corner.
d. at the top left corner.
e. at the lower left corner.
Answer:
is this suppose to be a quiz, cause the answers are b, none: it quarks, e , c
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