Introduction to Molecular Polarity

Which of the following is a polar molecule?

• CH₄
• Xe
• H₂O
• CO₂

Which phrase correctly describes the distribution of charge and the molecular polarity of ethane?

• symmetrical and polar
• asymmetrical and polar
• asymmetrical and nonpolar
• symmetrical and nonpolar

Which statement correctly describes NaCl?

• Its charge is evenly distributed
• It is a polar molecule
• It is ionic, and its charges are distributed unevenly

Tags

NGSS.HS-PS1-3

Which of the following describes the charge distribution and molecular polarity of NH₃?

• even distribution and polar
• uneven distribution and nonpolar
• uneven distribution and polar
• even distribution and nonpolar

Which of the following geometries could be nonpolar?

• bent
• tetrahedral
• trigonal pyrimidal
• none of the above

Which formula represents a nonpolar molecule?

• HBr
• H₂S
• CBr₄
• PCl₃

Which of the following molecules, based on the elements present, would be most polar?

• HF
• H₂
• HCl
• HBr

Which statement explains why ethene does not dissolve in water?

• Ethene is polar and water is nonpolar.
• Ethene is nonpolar and water is nonpolar.
• Ethene is polar and water is polar.
• Ethene is nonpolar and water is polar.

Which molecule would be most soluble in water?

• Solid iodine, I_2(s)
• Glucose, C₆H₁₂O_6(s)

A molecule containing polar covalent bonds is always polar.

• True
• False