Polarity

Polarity is a physical property of compounds which relates other physical properties such as solubility, boiling and melting points and intermolecular interactions between molecules.

• True

• False

The polarity of substances determines their solubility in different solvents.

• True

• False

The molecular geometry of water is trigonal pyramidal.

• True

• False

What molecule could this be? 

• BF₃
• CH₄
• H₂O
• CO₂

A molecule shape is a three-dimensional arrangement of atoms or bonding

groups around a central atom. The molecular shape is governed

by the valence shell electron repulsion (VSEPR) theory.

• The first and second statements are true

• The first and second statements are false.

• The first statement is true while the second statement is false

• The first statement is false while the second statement is true.

Sulfur hexafluoride (SF6) has six bonded electrons and no lone pair

in its central atom.

• True

• False

Which has the greater electronegativity: 
H, N, O or F?

• H
• F
• N
• O

What type of bond is involved if the electronegativity difference is <O.5?

• Covalent Bond

• Ionic Bond

• Polar Covalent Bond

• Non-polar Covalent Bond

When you have Si-O, what is the polarity?

• nonpolar

• polar

• ionic

Which is TRUE about polar bonds?

• They are present in metals

• They are responsible for the formation of ionic compounds.

• They always result in the formation of polar molecular compounds

• They may result in nonpolar covalent compounds depending on

  molecular geometry.