Covalent bonds are formed when_____________.

• electrons are transferred

• electrons are shared

• electrons vanish

• protons absorb electrons

Tags

NGSS.HS-PS1-2

The Octet Rule states that in chemical compounds, atoms tend to have

• the electron configuration of a noble gas

• eight electrons in their valence energy level

• more electrons than protons

• more protons than electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In naming a covalent compound, the number of atoms of each element present in the molecule is indicated by

• Roman numerals

• superscripts

• prefixes

• suffixes

Which of the following is a covalent compound?

• BeHCO₃

• MgS

• AgI

• PCl₅

Tags

NGSS.HS-PS1-2

What type of elements are in a covalent bond?

• nonmetal bonded to a nonmetal

• metal bonded to a nonmetal

• metal bonded to a metal

• none of the above

What is the correct name for the molecule shown in the picture?

• potassium chloride

• potassium pentachloride

• phosphorus tetrachloride

• phosphorus pentachloride

How many total atoms are present in a molecule of diphosphorus pentoxide?

• 2

• 5

• 7

• 9

Tags

NGSS.MS-PS1-1

The number of covalent bonds in NH₃ is:

• 2

• 3

• 4

• 5

Which of the following molecules has a double covalent bond?

• C₂H₂

• CH₄

• H₂O

• CH₂Cl₂

Tags

NGSS.HS-PS1-2

Which of the following is the correct Lewis dot structure for the molecule fluorine (F₂)?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-1