1.The Bohr model of the hydrogen atom is

Question

best described as:
1. A large lump of chocolate chip cookie
dough with electrons as the chocolate chips;
those of higher energy are on the outside surface
of the lump
2. Similar to Saturn with electrons of varying
energies in a single circular ring orbiting
around a huge nucleus
3. A minature solar system in which electrons
occupy specific orbits; larger orbits are
occupied by higher energy electrons
4. A loosely packed assortment of subatomic
particles of varying energies; the whole
collection is shaped like a bagel

2.Neils Bohr’s model of the hydrogen atom
explained the unique set of spectral emission
or absorbtion lines seen for hydrogen or other
atoms. Pick the statement that best summarizes
the model.
1. The electrons all formed one single continuous ring around the nucleus. When light
was shone at the atom, this ring expanded.
Because the electrons were further apart and
higher in energy, light was absorbed as this
happened. The color of light absorbed was
related to the number of electrons in the ring.
2. As the hydrogen atom only had one electron,
it only emitted certain colors of light as
it orbited around the nucleus. Larger atoms
had more electrons so more colors were seen.
3. The electrons occupied discrete circu-lar orbits; closer orbits were lower in energy.
Emission lines were caused by electrons in
excited atoms jumping from outer orbits to
closer orbits. Each jump corresponded to a
specific amount of energy released.
4. The electrons were trapped inside the
nucleus and specific amounts of energy (specific
colors of light) were needed to release
them. This varied from one element to another.

3Select the set of bonds below that lists in
order an ionic bond, polar covalent bond, and
and a nonpolar covalent bond.
1. Na-S, N-H, Br-Br
2. Br-Br, N-H, Na-S
3. N O, O-H, N-H
4. Na-S, Br-Br, N-H
5. K-O, H-F, N-H

Answer 1

http://www.chemistry.about.com › … › Chemistry Articles & Features

Answer 2

Try also: http://www.en.wikipedia.org/wiki/Bohr_model

Answer 3

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Answer 4

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Answer 5

2.Neils Bohr’s model of the hydrogen atom
explained the unique set of spectral emission
or absorbtion lines seen for hydrogen or other
atoms. Pick the statement that best summarizes
the model

Answer 6

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