Chemical Bonds

Ionic bonds form between ---

• nonmetals.

• metals and nonmetals.

Covalent bonds form between ---

• nonmetals.

• metals and metals

• metals and nonmetals

What are valence electrons?

• sum of the protons and neutrons

• protons minus electrons

• electrons in the inner shells

• electrons in the outer shell

Atoms that gain an electron have an electric charge of ---

• -1.

• -2.

• +1.

• +2.

Tags

NGSS.MS-PS2-3

Which of the following is NOT a covalent bond?

• K₂S

• H₂O

• I₂

• CO₂

Tags

NGSS.MS-PS1-1

Which of the following is NOT an ionic bond?

• NH₃

• KCl

• K₃N

• NaCl

An electron has a ___ charge.

• no charge

• positive

• negative

• it depends

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

According to the Octet Rule, atoms of elements react with each other in order to attain ____ electrons in their outermost energy level or shell.

• 2

• 4

• 8

• 10

An atom of Neon complies with the Octet Rule because it has ___ electrons in its outer shell.

• 10

• 8

• 2

• 7

Tags

NGSS.MS-PS1-1

How many valence electrons does Oxygen (O) have?

• 6

• 8

• 15

• 16

Tags

NGSS.MS-PS1-1