The electrons in a polar covalent molecule are shared...

• Evenly

• Unevenly

• Electrons are not shared

• None of the Above

In a polar covalent bond, the electrons gather around...

• The atom with the Greatest Electronegativity

• The atom with the Lowest Electronegativity

• Each atom Equally

• None of the Above

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The electrons in a nonpolar covalent molecule are shared...

• Evenly

• Unevenly

• Electrons are not shared

• None of the Above

The polarity of a bond is determined by...

• The sum of the electronegativities of the two atoms

• The difference in the electronegativities of the two atoms

• The charges of the atoms

• None of the Above

Partial charges are present in which type of bond?

• Ionic

• Nonpolar Covalent

• Polar Covalent

• Both Polar Covalent and Ionic

In a polar covalent bond, which atom will have a partial positive charge? (choose 2 correct answers)

• The atom that attracts fewer electrons

• The atom with the greater electronegitivity

• The atom that attracts more electrons

• The atom with the lower electronegativity

Tags

NGSS.HS-PS1-2

A diatomic molecule like O₂ is always _____ because electrons are shared _____

• nonpolar; unequally

• polar; equally

• nonpolar; equally

• polar; unequally

Order the types of bonds based on the charge of their molecules. (lowest amount of charge to greatest)

• Polar Covalent --> Ionic --> Nonpolar Covalent

• Ionic --> Nonpolar Covalent --> Polar Covalent

• Ionic --> Polar Covalent --> Nonpolar Covalent

• Nonpolar Covalent --> Polar Covalent --> Ionic

Tags

NGSS.HS-PS1-3

In a polar bond, the more electronegative element will assume a partial ________ charge.

• positive
• negative

What explains the very high melting and boiling point of water

• Strong dipole-dipole bonds between water molecules
• Strong hydrogen bonds between water molecules
• Dispersion forces which are present in all molecules
• Asymmetrical shape of the polar bonds.

Tags

NGSS.HS-ESS2-5