Polarity

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

Br & Br

• Ionic 
• Polar Covalent 
• Nonpolar Covalent 

Tags

NGSS.HS-PS1-1

To which term of reference does the following description refer to?

"an unequal distribution of an electrical charge"

• Polar

• Nonpolar

• Both

Answer explanation

The unequal distribution "or sharing" of electrons results in - one side of a Polar Covalent Bond being partially negative while the other side is partially positive.

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-4

To which term of reference does the following description refer to?

"...electronegativity values are the same"

• Polar

• Nonpolar

• Both

Answer explanation

Does the following reference Polar, Nonpolar, or both:

"unequal sharing of electrons"?

• Polar

• Nonpolar

• Both

Does the following reference Polar, Nonpolar, or both:

"equal sharing of electrons"?

• Polar

• Nonpolar

• Both

True or False

Attractions between polar molecules are Weaker than attractions between nonpolar molecules.

• True

• False

Tags

NGSS.HS-PS1-3

The two (2) factors that determine if a molecule is Polar or Non-polar:

• The atoms's ionization energy

• the type of atoms in the molecule

• The atom's oxidation number

• the shape of the molecule

When you have Br-Br, what is the polarity?

• Polar

• nonpolar

• Ionic

Tags

NGSS.HS-PS1-2

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

• Evenly

• Unevenly

• Electrons are not shared

• None of the Above