Bonding Unit Quiz

Choose two: Ions are described by charges because...

• opposite charges attract

• opposite charges repel

• like charges repel

• like charges attract

T or F: Positive ions form when atoms LOSE an electron

• True

• False

T or F: The majority of elements that become positive ions are non-metals

• True

• False (they are metals)

The elements that become negative ions are 

• Metals and Nonmetals

• Nonmetals

• Metalloids and Nonmetals

• Metals

T or F: To form negative ions, atoms must GAIN an electron

• True

• False

What is the charge on calcium?

• -2

• -1

• +2

• +1

What is the formula of the ionic compound formed when calcium and fluorine bond?

• Ca2F

• Ca4F8

• CaF

• CaF2

Tags

NGSS.MS-PS1-1

T or F: Ionic bonds are formed by sharing electrons

• True

• False (they are transferred)

An covalent bond is between 

• Metals and Metals

• Metalloids and Metals

• Metals and Nonmetals

• Nonmetals and Nonmetals

T or F: Covalent bonds form when valence electrons are shared

• True

• False

Tags

NGSS.HS-PS1-1