Covalent Bonds

The chemical bond formed when two atoms share electrons is called a ______ ____.

(a)  

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Covalent bonds usually form between atoms of nonmetals.

• true

• false

What is the force that holds covalent bonds together?

Answer explanation

The attraction of each atom's nucleus for the shared pair of electrons.

A neutral group of atoms joined together by covalent bonds is a

• compound

• element

• molecule

• neutron

Tags

NGSS.MS-PS1-1

Two atoms that share two pairs of electrons form a, ______ ____.

(a)  

Atoms that share three pairs of electrons such as nitrogen and carbon can form (a)   bonds.

A compound that is composed of molecules is known as a _______ bond.

• molecular bond

• polar bond

• covalent bond

• ionic bond

Compared to ionic compounds, how are molecular compounds different?

Answer explanation

Molecular compounds generally have lower melting points and boiling points and they do not conduct electricity when dissolved.

Tags

NGSS.MS-PS1-1

A covalent bond in which electrons are shared unequally is called a (a)   bond.

A covalent bond in which electrons are shared equally is a ________ bond.

• molecular

• nonpolar

• polar

• covalent