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Polarity

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

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

a)

True

b)

False

2.

The polarity of substances determines their solubility in different solvents.

a)

True

b)

False

3.

The molecular geometry of water is trigonal pyramidal.

a)

True

b)

False

4.
What molecule could this be? 
a)
BF3
b)
CH4
c)
H2O
d)
CO2
5.

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.

a)

The first and second statements are true

b)

The first and second statements are false.

c)

The first statement is true while the second statement is false

d)

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

6.

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

in its central atom.

a)

True

b)

False

7.
Which has the greater electronegativity: 
H, N, O or F?
a)
H
b)
F
c)
N
d)
O
8.

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

a)

Covalent Bond

b)

Ionic Bond

c)

Polar Covalent Bond

d)

Non-polar Covalent Bond

9.

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

a)

nonpolar

b)

polar

c)

ionic

10.

Which is TRUE about polar bonds?

a)

They are present in metals

b)

They are responsible for the formation of ionic compounds.

c)

They always result in the formation of polar molecular compounds

d)

They may result in nonpolar covalent compounds depending on

molecular geometry.

11.

The general trend of electronegativity as you move from top to bottom

of the periodic table is increasing.

a)

True

b)

False

12.

Is this molecule polar or non-polar?

a)

Polar

b)

Non-polar

13.
Which of the following is the correct Lewis structure for water?
a)
A
b)
B
c)
C
14.

What type of chemical bond holds the atoms of water molecule together?

a)

Ionic bond

b)

Hydrogen bond

c)

Polar covalent bond

d)

Nonpolar covalent bond

15.
Who could this molecule be?
a)
CH4
b)
CO2
c)
PCl5
d)
BF3