Questão 1
Questão
Which of the following did Democritus NOT believe about atoms?
Questão 2
Questão
Which scientist was the first to propose that atoms combined in specific proportions to create compounds?
Responda
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Rutherford
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Dalton
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Thomson
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Bohr
Questão 3
Questão
Thomson's concept of the atom was flawed because it didn't account for isotopes.
Questão 4
Questão
Thomson's '[blank_start]chocolate chip cookie[blank_end]' model of the atom was conceptualized based on the results of the [blank_start]cathode ray[blank_end] experiment. The experiment proved that atoms were [blank_start]repulsed[blank_end] by the negative part of a magnetic field. Based on these observations, Thomson realized that [blank_start]electrons[blank_end] existed inside the atom.
Responda
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chocolate chip cookie
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beehive
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cathode ray
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gold foil
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repulsed
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attracted
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electrons
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protons
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neutrons
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sub-atomic particles
Questão 5
Questão
When the gold foil experiment was performed, 1/10,000 alpha particles were deflected.
Questão 6
Questão
Which restriction(s) applied to Rutherford's model of the atom?
Responda
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Did not account for isotopes
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If model was accurate, electrons should lose energy and collapse into themselves, causing the entire atom to collapse
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Did not account for the behaviour of certain gasses
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Model only works for atoms with one electron
Questão 7
Questão
The [blank_start]colour[blank_end] of light emitted by an atom is dependent on the [blank_start]size[blank_end] of the quantum jumps that the atom's [blank_start]electrons[blank_end] make.
Questão 8
Questão
Who proposed the Uncertainty Principle?
Responda
-
Heisenberg
-
Bohr
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de Broglie
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Schrodinger
Questão 9
Questão
The Uncertainty Principle states that we cannot know both the [blank_start]position[blank_end] and [blank_start]momentum[blank_end] of a particle at a given time.
Responda
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position
-
energy
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momentum
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shape
Questão 10
Questão
What idea about the structure of an atom did Louis de Broglie propose?
Responda
-
He came up with the quantum mechanical model of the atom
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He created equations to indicate the probable location of an atom
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He hypothesized that the dual-wave properties of light also apply to matter
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None of the above
Questão 11
Questão
6.626 x 10^-34 is [blank_start]Planck[blank_end]'s constant
Questão 12
Questão
Why is the electron orbital diagram incorrect?
Responda
-
It violates Hund's Rule
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It violates the Aufbau Principle
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It violates the Pauli Exclusion Principle
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The diagram is not incorrect
Questão 13
Questão
Why is the electron orbital diagram incorrect?
Responda
-
It violates the Aufbau Principle
-
It violates the Pauli Exclusion Principle
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It violates Hund's Rule
-
The diagram is not incorrect
Questão 14
Questão
Why is the electron orbital diagram incorrect?
Responda
-
It violates the Aufbau Principle
-
It violates the Pauli Exclusion Principle
-
It violates Hund's Rule
-
The diagram is not incorrect
Questão 15
Questão
Why is the electron orbital diagram incorrect?
Responda
-
It violates the Aufbau Principle
-
It violates the Pauli Exclusion Principle
-
It violates Hund's Rule
-
The diagram is not incorrect
Questão 16
Questão
The l value of a 4f electron is 3.
Questão 17
Questão
All four quantum numbers for the 2nd electron in a 3p orbital are:
Responda
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n = 3, l = 2, ml = 0, ms = 1/2
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n = 3, l = 2, ml = 0, ms = -1/2
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n = 3, l = 1, ml = 0, ms = 1/2
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n = 3, l = 1, ml = 0, ms = -1/2
Questão 18
Questão
Hydrogen bonding is the strongest type of intramolecular bond
Questão 19
Questão
Which type of intermolecular bonding is the weakest?
Responda
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Dipole-Dipole
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London Forces
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Hydrogen Bonding
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None of the above
Questão 20
Questão
Wavelength and frequency are [blank_start]inversely[blank_end] related, wavelength and energy are [blank_start]inversely[blank_end] related, and energy and frequency are [blank_start]directly[blank_end] related.
Responda
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inversely
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directly
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not
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inversely
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directly
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not
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directly
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inversely
-
not