AnswersIA-Chemistry A Survey of Chemistry AThe Modern Atomic Theory

The Structure of the Atom Answers

0 verified answers1 views
1
Free Preview

How does the electron-cloud model describe electrons?

A
The exact position of an electron can be known.
B
An electron can be found at certain distances from the nucleus.
C
An electron has a high probability of being in certain regions.
D
Each electron follows a specific path around the nucleus.
2
Free Preview

Which statement about the electron-cloud model is true?

A
It is the currently accepted atomic model.
B
It can easily be replaced by existing models.
C
It specifies the location and momentum of an electron.
D
It does not explain the formation of emission lines.
3

The diagram shows Niels Bohr’s model of an atom. What happens when the electron moves from the first energy level to the second energy level?

Question illustration
A
Energy is absorbed, and an emission line is produced.
B
Energy is released, and an emission line is produced.
C
Energy is absorbed by the atom.
D
Energy is lost from the atom.
4

This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy)In an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect?

A
ultraviolet light
B
dim blue light
C
bright red light
D
bright yellow light
5

Which observation provided Albert Einstein the clue that he needed to explain the photoelectric effect?

A
Light is made up of extremely small particles.
B
Particles that are emitted from a strip of metal are electrons.
C
Shining light on a metal strip produces emissions.
D
Energy of electrons depends on light’s frequency, not intensity.
6

Light of a certain energy shines on a metal and causes electrons to be emitted. Based on the research of Albert Einstein, what change would most likely result in stopping the emission of electrons from this metal?

A
an increase in the intensity of the light
B
a decrease in the intensity of the light
C
the use of light that has a higher frequency
D
the use of light that has a lower frequency
7

The emission spectrum of hydrogen shows discrete, bright, colored lines. Which characteristic of the Bohr model is best supported by this observation?

A
Energy is released when an electron moves to a higher energy level.
B
Smaller atoms have fewer spectral lines than larger atoms.
C
The energy of an electron increases with distance from the nucleus.
D
Electrons cannot exist in locations other than in specific orbits.
10

According to the Bohr model of an atom, what happens when an electron moves from the second energy level to the third energy level and then back to the second energy level?

A
Energy is absorbed and then stored in the atom.
B
Energy is released and then absorbed to form an absorption line.
C
Energy is absorbed and then released to form an emission line.
D
Energy is released from the atom, and the outer level is weakened.

Did you find these answers helpful?

More from this Course

Quiz
10 verified answers

The Modern Atomic Theory

Quiz
10 verified answers

The Modern Atomic Theory

Quiz
10 verified answers

The Modern Atomic Theory