Unit 3 Chemistry

Ethane, C₂H₆, has the following bonding:

• ionic

• metallic

• nonpolar covalent

• polar covalent

Copper (II) nitride, Cu₃N₂, has the following bonding:

• ionic

• metallic

• nonpolar covalent

• polar covalent

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Cesium chloride, CsCl(s) has the following bonding:

• lattice of positive and negative ions held together by electrostatic forces

• closely packed lattice with delocalized electrons throughout

• strong single covalent bonds with weak intermolecular forces

• strong multiple covalent bonds with weak intermolecular forces

Tags

NGSS.HS-PS1-3

Carbon dioxide, CO₂, has the following bonding:

• lattice of positive and negative ions held together by electrostatic forces

• closely packed lattice with delocalized electrons throughout

• strong single covalent bonds with weak intermolecular forces

• strong multiple covalent bonds with weak intermolecular forces

Tags

NGSS.HS-PS1-1

Which of the following typically has the lowest melting point?

• Metals

• Covalent network solids

• Ionic compounds

• Covalent molecules

Which of the following probably has the highest solubility in water?

• Metals

• Covalent network solids

• Ionic compounds

• Covalent molecules

Which of the following probably has the highest solubility in hexane, C₆H₁₄?

• Metals

• Polar covalent molecules

• Ionic compounds

• Nonpolar covalent molecules

Of the following molecules, which is the most polar?

• CO

• CO₂

• O₂

• HF

• F₂

Tags

NGSS.HS-PS1-1

Which of the following has the lowest melting point?

• Zn

• SiO₂

• CaCl₂

• C₂H₆

Which of the following is most likely to be soluble in water?

• NaF

• C₁₂H₂₂O

• Mn

• Cl₂