Which of the following is an ionic compound?

• CO₂

• CaCl₂

• CH₄

• PCl₅

What type of bond is found in a molecule of O₂?

• Ionic

• Metallic

• Covalent

• Hydrogen

Which compound is most likely to be a solid at room temperature with a high melting point?

• H₂O

• NaBr

• CO₂

• C₆H₁₂O₆

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the correct name for Fe₂O₃?

• Iron(II) oxide

• Iron(III) oxide

• Iron oxide

• Ferric oxide

Which of the following substances is held together by metallic bonding?

• NaCl

• Cu

• H₂O

• SO₂

Tags

NGSS.HS-PS1-3

Which type of compound typically dissolves in water and conducts electricity when dissolved?

• Covalent

• Ionic

• Metallic

• Network covalent

What is the formula for aluminum sulfide?

• AlS

• Al₂S₃

• Al₃(SO₃)₂

• Al(SO₂)₃

Tags

NGSS.MS-PS1-1

Which of the following compounds contains a polyatomic ion?

• CO₂

• NH₄Cl

• MgBr₂

• CH₄

What is the correct name for CuCl₂?

• Copper chloride

• Copper(II) chloride

• Copper(I) chloride

• Copper dichloride

Why do polar covalent bonds form in molecules?

• Electrons are shared equally between atoms.

• One atom attracts shared electrons more strongly than the other.

• Both atoms completely transfer electrons.

• The atoms have identical electronegativities.