AnswersChemistryAtoms and the Periodic Table

Practice Test Answers

14 verified answers
1
Free Preview

How is this model useful?

A
It shows how orbitals are distributed in the shells of a cobalt atom.
B
It shows how orbitals are distributed in the shells of an iron atom.
C
It shows how electrons are distributed in the shells of a cobalt atom.
D
It shows how electrons are distributed in the shells of an iron atom.
2
Free Preview

Based on the table, which atom has a charge of negative 1 ?

A
1
B
2
C
3
D
4
3

Based on these data, what is the average atomic mass of element cap b ?

A
10 point 0 1
B
10 point 5 1
C
11 point 0 1
D
10 point 8 1
4

A piece of sodium metal can be described as

A
an impure substance that is unreactive.
B
a pure substance and a compound.
C
a pure substance and an element.
D
an impure substance that is reactive.
5

Which shows the electron configuration for Silicon Si ?

A
Ar times 4 times s squared times 3 times d to the 10th power times 4 times p to the 4th power
B
Ar times 3 times d to the 1th power times 4 times s squared
C
Ne times 3 times s squared times 3 times p to the 4th power
D
Ne times 3 times s squared times 3 times p squared
6

What is the electron configuration for helium He ?

A
1 s to the 1th power
B
1 s squared
C
1 s squared 2 s to the 1th power
D
1 s squared 2 s squared
7

Which is a set of valid quantum numbers?

A
n is equal to negative 1 , l is equal to 0 , m is equal to 0
B
n is equal to 4 , l is equal to 3 , m is equal to 3
C
n is equal to 1 , l is equal to negative 2 , m is equal to 0
D
n is equal to 4 , l is equal to 4 , m is equal to 4
8

What is the predicted order of first ionization energies from highest to lowest for lithium ( Li ), sodium ( Na ), potassium ( cap k ), and rubidium ( Rb )?

A
Rb is greater than cap k comma cap k is greater than Li comma Li is greater than Na
B
cap k is greater than Rb comma Rb is greater than Na comma Na is greater than Li
C
Rb is greater than cap k comma cap k is greater than Na comma Na is greater than Li
D
Li is greater than Na comma Na is greater than cap k comma cap k is greater than Rb
9

An electron in a hydrogen atom moves from level 3 to level 1. In a second hydrogen atom, an electron drops from level 2 to level 1. Which statement describes the most likely result?

A
The second atom emits light with more energy.
B
The first and second atoms absorb energy without emitting light.
C
The first atom emits light with more energy.
D
The first and second atoms emit light with the same amount of energy.
10

Which element would most likely have chemical properties similar to that of magnesium ( Mg )?

A
Ni
B
Ar
C
Ca
D
cap f
11

Which is most likely true about electronegativity?

A
It tends to be the same across a period.
B
It tends to increase across a period.
C
It tends to increase down a group.
D
It tends to be the same down a group.
12

What was Johann Dobereiner’s contribution to the development of the periodic table?

A
He arranged the elements according to increasing atomic mass.
B
He arranged the elements according to increasing atomic number.
C
He organized elements into four groups based on their properties.
D
He identified triads of elements that had similar properties.
13

To explain the photoelectric effect, Albert Einstein linked the photoelectric effect to an idea from which scientist?

A
Isaac Newton
B
Thomas Young
C
Max Planck
D
Heinrich Hertz
14

Which physical method can separate a mixture of steel ball bearings and marbles?

A
boiling
B
evaporation
C
filtration
D
sorting

Did you find these answers helpful?

More from this Course

practice test
10 verified answers

Practice Test