Atomic Theory and Bonding - Section 4.1 Quiz

What are two properties that protons and neutrons have in common?

Both are found in the nucleus, and they have almost exactly the same relative mass
Both have the same electric charge (1+), and they have almost exactly the same relative mass
Both are found in the area surrounding the nucleus, and they have almost exactly the same relative mass
Both have the same electric charge (1¬¬–), and they have almost exactly the same relative mass

A glass of milk has both mass and volume. What accounts for most of the volume that the milk takes up in the glass?

The space taken up by the tiny electrons that surround the nucleus of each atom
The nucleus, which contains the protons and neutrons in each atom
The protons, which have the highest relative mass of any subatomic particle
The neutrons, which have the highest relative mass of any subatomic particle

An atom of calcium has many subatomic particles with positive, negative and neutral charges. How can an atom of calcium, as well as an atom of every other stable element on the periodic table, have an overall charge of zero?

Every stable element on the periodic table has the same number of protons and electrons
Subatomic particles with charges are not found in most atoms of stable elements
The masses of protons and neutrons cancel each other out in a stable atom
All of the subatomic particles in neutral atoms are neutrons

What is the nuclear charge on an atom of nitrogen?

7+
7–
3–
0

Which element is described in the following sentence? “An atom of this element has 26 electrons and 30 neutrons.”

Iron
Zinc
Aluminum
Beryllium

Which element is in period three and group two?

Magnesium
Scandium
Boron
Sodium

What do fluorine, chlorine, bromine and iodine have in common?

They all belong to the halogen family of elements
They all belong to the noble gas family of elements
They all belong to period 17 on the periodic table
They all have seven protons in their nucleus

Which of the following is the most accurate description of a covalent molecule?

Two or more non-metal atoms share a bonding pair of electrons in their valence electron shells
At least one electron from a positive ion transfers to a negative ion to create a neutral compound
One or more metal atoms and one or more non-metal atoms share a bonding pair of electrons in their valence electron shells
Electrons transfer from one or more non-metal atoms to at least one other non-metal atom

Examine the following compound:

What is the most accurate description and name of this compound?

A Bohr diagram of lithium oxide
A Bohr diagram of sodium sulphide
A Lewis diagram of carbon dioxide
A Bohr diagram of carbon dioxide

How do Lewis diagrams differ from Bohr diagrams?

Lewis diagrams show only the bonding (valence) electrons, while Bohr diagrams show all electrons in the atoms involved
Lewis diagrams show much more detail and information about the atoms involved than Bohr diagrams
Lewis diagrams cannot be used to illustrate covalent molecules, while Bohr diagrams can show covalent molecules
Lewis diagrams are not used to illustrate ionic compounds, while Bohr diagrams can illustrate ionic compounds