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Worksheets

Polarity & Bonds

Total questions: 28

Worksheet time: 16mins

Name
Class
Date
1.
In covalent bonds, electrons are ___________.
a)
transferred
b)
gained
c)
lost
d)
shared
2.
Which of the following is the correct Lewis structure for water?
a)
A
b)
B
c)
C
3.
The most electronegative atom in the periodic table is:
a)

Fluorine

b)

Helium

c)

Hydrogen

d)

Oxygen

4.

A bond with a partially negative end and a partially positive end is:

a)

polar

b)

nonpolar

5.

Is this molecule polar or non-polar?

a)

Polar

b)

Non-polar

6.

Is this molecule polar or non-polar?

a)

Polar

b)

Non-polar

7.

True or False: Shorter bonds are stronger bonds with larger bond energy.

a)

True

b)

False

8.

When the bond is stronger, the bond energy is

a)

lower

b)

higher

9.

Bond energy is the energy required to:

a)

Break the bond

b)

Form the bond

c)

Remove an electron from the outermost shell

10.

If a bond has a higher bond energy that means that the bond is

a)

Harder to break

b)

Easier to break

11.

Select the LONGEST bond

a)

HF

b)

HBr

c)

HCl

12.

Select the LONGEST bond

a)

KBr

b)

NaBr

c)

NaCl

13.

Electronegativity is best defined as:

a)

An atom's ability to REMOVE an electron from another atom

b)

An atom's ability to LOSE its own electron

14.

In a POLAR covalent bond the electrons spend more time around the:

a)

more electronegative atom

b)

less electronegative atom

c)

central atom

15.

Which of the following is a TRUE statement?

a)

Polar liquids dissolve polar solids

b)

Polar liquids dissolve nonpolar solids

c)

Polar liquids dissolve both polar and nonpolar solids

16.

Is this correct way to draw the Lewis Dot Structure for Carbon?

a)

Yes

b)

No, too many electrons

c)

No, not enough electrons

d)

No, dots are in wrong places

17.

USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have?

a)

31

b)

5

c)

15

d)

4

18.

Atomic number tells us the number of

a)

protons

b)

neutrons

c)

protons & neutrons

19.

as long as it is an ATOM, the number of electrons

a)

equals # of neutrons

b)

equals the mass number

c)

equals # of protons

20.

The number of neutrons is equal to

a)

mass number

b)

atomic number

c)

mass number + atomic number

d)

mass number - atomic number

21.

Based on VALENCE ELECTRONS, this could represent the outer ring of:

a)

Mg

b)

Cl

c)

C

d)

O

22.

The halogens have

a)

1 valence electron

b)

2 valence electrons

c)

7 valence electrons

d)

8 valence electrons

23.

In order for an atom to become stable, it requires:

a)

A full outer shell of valence electrons

b)

0 valence electrons

c)

1 valence electron

d)

4 valence electrons

24.

Electrons on the outermost shell that are involved in bonding and reactions are known as:

a)

Ground state electrons

b)

Electromagnetic electrons

c)

Valence electrons

25.

This type of bond happens when electrons are shared EQUALLY between the two bonded atoms.

a)

Polar covalent

b)

Nonpolar covalent

c)

Ionic

26.

Classify the following molecule as either polar or nonpolar

a)

polar

b)

nonpolar

27.

Classify the following molecule as either polar or nonpolar

a)

polar

b)

nonpolar

28.

Covalent bonds are formed between:

a)

Two nonmetals

b)

Two metals

c)

A metal & a nonmetal