Topic 4.2 Covalent Bonding

Topic 4.2

Covalent Bonding

Topic Notes

Multiple Choice

Is carbon considered a metal or a non-metal?

• metal
• nonmetal
• other

Multiple Choice

What region of the periodic table contains atoms that form covalent bonds?

• the left side
• the middle
• the right side
• top left

Multiple Choice

In chemical compounds, covalent bonds form when

• the electronegativity difference between two atoms is very large.
• electrons are completely transferred between two metals.
• pairs of electrons are shared between two nonmetal atoms.
• two nonmetal atoms are attracted to each other by opposite charges.

Multiple Choice

How are covalent bonds explained?

• When one atom takes the other atom's electron
• When the atom shares an electron with an another atom
• When the two nucleus merge
• When the neutrons leave the nucleus

Multiple Choice

What two types of atoms make a covalent bond?

• 2 Nonmetals
• 1 Nonmetal and 1 Metal
• 2 Metals
• 2 Noble Gases

Multiple Choice

Is Hydrogen considered a metal or a non-metal?

• Metal
• Non-metal

Multiple Choice

What does the subscript "2" in a chlorine molecule mean?

• There are two chlorine atoms bonded ionically.

• There are two chlorine atoms bonded covalently.

• There are two shared valence electrons.

• There is one shared valence electrons.

Multiple Choice

In general, elements at the top of a group have a greater attraction for electrons than

• alkali metals.

• alkaline earth metals.

• elements at the bottom of a group.

• elements on the right side of a group.

Multiple Choice

Except for noble gases, elements on the right side of the table have a greater attraction to

• elements that are metalloids.

• elements that are halogens.

• elements that are in the transition zone of the table.

• elements that are on the left side of the table.

Multiple Choice

Triple bonds are formed when atoms share _____ pairs of valence electrons.

• two

• four

• three

• six

Multiple Choice

Single bonds are formed when ____ pair(s) of valence electrons are shared.

• one

• three

• two

• four

Multiple Choice

Give the formula for phosphorus trifluoride

• P₃F
• PF
• PF₃
• P₃F₃

Multiple Choice

Name CCl₄

• carbon carbon tetraiodide
• carbon tetrachloride
• monocarbon tetrachloride
• water

Multiple Choice

What is a double bond?

• a bond between two atoms
• one pair of electrons shared between two atoms
• two pairs of electrons shared between two atoms
• James Bond's brother

Multiple Choice

Which of these is covalent?

• NaCl
• Pb(NO₃)₂
• CO₂
• AlCl₃

Multiple Choice

What would you name this molecule?

• SNa3
• H3O
• NaCl
• H2O

Multiple Choice

What molecule is this?

• CO
• CO2
• C2O
• C2O2

Multiple Choice

According to the octet rule most elements need _______ valence electrons.

• 2
• 8
• 6
• 18