Polarity of Molecules

Which of the following molecules are nonpolar?

• CO and CH₄

• CO₂ and CH₄

• H₂O and CO

• CO and CO₂

BF₃ molecule is?

• Either

• Polar

• Non-polar

• Neither

Which represents polar molecules?

• None of these

• CH₄

• CO₂

• F₂

Identify the formula which represents a nonpolar molecule?

• NH₃

• H₂S

• HCl

• CF₄

The periodic trend for electronegativity values:

• Decreases going down a group and increases going across the period

• Increases going down a group and increases going across a period

• Decreases going down a group and increases going across a period

• Decrease going down a group and decreases going across the period

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Does sand (SiO₂) dissolve in water?

• No, because polar does not dissolve with non-polar

• Yes, because ionic dissolves in polar

• Yes, because polar dissolves with non-polar

• No, because non-polar does not dissolve with polar

Tags

NGSS.HS-ESS2-5

Which molecule has a polar covalent bond?

• H-F

• F-F

• K-F

• None of the above

Which best describes a polar bond?

• Equal transfer of electrons resulting in a positive and negative ion

• Unequal transfer of electrons resulting in a positive and negative ion

• Equal pull between the shared electron(s)

• Unequal pull between the shared electron(s)

Which formula represents a polar molecule?

• H₂

• H₂O

• CO₂

• CCl₄

What kind of compound is CO₂?

• Ionic

• Polar molecule with polar bonds

• Non-polar molecule with polar bonds

• Polar molecule with nonpolar bonds