CHM 111 - Chap. 7-8
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ACROSS
1. ___ effect: When light striking the
surface of a metal causes a current
to flow.
4. The ___ principle says that we
cannot the exact position and
speed of an object.
11. Electrons that have absorbed
energy and moved to a level
farther from the nucleus are in
a(n) ___ state.
13. When the light from an excited
gas is separated into its colors we
get a bright ___ ___.
16. ___ oxides are acidic.
17. ___'s model of the atom requires
the electrons to be at specific
energy levels.
19. ___ energy is the energy needed
to pull an electron off an atom.
20. ___ atoms are not attracted by a
magnetic field.
DOWN
2. ___ ___ indicates that electrons in
a subshell will have less energy if
they are unpaired and have the
same spin.
3. The distance from the crest of one
wave to the crest of the next wave
is called the ___.
5. An atom and ion, or ions that have
thee same electron configuration
are ___.
6. The shell number of an electron
corresponds to the ___ quantum
number.
7. Visible light is just one form of
___ radiation.
8. The ___ of light is proportional to
the energy in its photons.
9. Quantum of energy in light.
10. Invisible light that we feel as heat.
12. The bending of a wave as it passes
through a small opening.
14. The cation of an element is ___
than the neutral atom.
15. Ions of the main group elements
usually have ___ ___ electron
configurations.
18. Which has more energy: radio
waves or gamma waves?