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Chemical Bonding

Total questions: 61

Worksheet time: 37mins

Name
Class
Date
1.

Why do all bonds form?

a)

To fill up the outer shell.

b)

To achieve the one or duplet electronic configuration

2.

An atom with 1 valence electron 'needs' a full shell, so it can either gain 7 electrons or lose 1. Which is more likely to occur?

a)

lose 1 electron

b)

gain 7 electrons

3.

What two types of atoms make a covalent bond?

a)

metal atom and metal atom

b)

metal atom and non metal non atom

c)

non metal atom and non metal atom

4.

When an atom loses an electron, it becomes a _________.

a)

noble gas

b)

anion

c)

cation

5.

Atoms are most stable when their outer shell is full or complete.

a)

True

b)

False

6.

Atoms involved in a covalent bond are not charged, while atoms involved in an ionic bond are charged (negative or positive)

a)

True

b)

False

7.

What part of an atom is involved in chemical bonding?

a)

proton

b)

neutron

c)

electron

8.

How many valence electrons does hydrogen have?

a)

1

b)

2

c)

3

d)

4

9.

Low melting point and low solubility in water are general properties of ______________________ compounds

a)

ionic

b)

covalent

c)

all

10.

Where are the non-metals located on the periodic table?

a)

all over

b)

On the left side of the "staircase"

c)

On the right side of the "staircase"

11.

Which of the pair of elements form an ionic bond?

a)

Magnesium and Oxygen

b)

Magnesium and Sodium

c)

Iron and Zinc

d)

Nitrogen and Hydrogen

12.

How many valence electrons are shown in the diagram?

a)

16

b)

7

c)

6

d)

2

13.

TRUE OR FALSE: Ionic compounds have high boiling points because they consist of a strong ionic bond.

a)

TRUE

b)

FALSE

14.
How do covalent bonds form?
a)
Donating & receiving valence e- between atoms.
b)
Opposite slight charges attract each other between compounds.
c)
Scientists are still not sure how they form.
d)
Sharing valence e- between atoms.
15.
Which of these is NOT an alloy?
a)
bronze
b)
copper
c)
brass
d)
stainless steel
16.
What is the basis of a metallic bond?
a)
the attraction of neutral metal atoms.
b)
the attraction between protons and neutrons.
c)
the attraction between positive metal ions and interlocking electrons.
d)
the attraction between positive metal ions and free floating electrons.
17.
The ability of a material to be shaped in all directions without cracking or breaking.
a)
hardness
b)
ductility
c)
malleability
d)
conductivity
18.

Examine the image: How many bonds are formed looking at the model of the compound? And also indetify what type of bond is formed.

a)

2 bonds; covalent

b)

4 bonds; metallic

c)

2 bonds; ionic

d)

4 bonds; covalent

19.

Which of the following is true for ionic bonding & ionic compounds?

a)

They must be made of ions with like charges.

b)

The negative ion must be written first.

c)

Compounds must have an overall charge of zero.

d)

They are made of metals and nonmetals.

e)

The positive ion must be written first.

20.
A charged particle that has gained or lost electrons is called a _____.
a)
molecule
b)
ion
c)
isotope
d)
element
21.

Nitrogen, N, will form which of the following ions?

a)

N

b)

N-3

c)

N-5

d)

N+5

22.

What will be the charge of a bromine ion?

a)

+7

b)

-7

c)

-1

d)

+1

23.
What region of the periodic table contains atoms that form covalent bonds?
a)
the left side
b)
the middle
c)
the right side
d)
top left
24.
Which of the following is an example of an IONIC COMPOUND?
a)
NaCl
b)
H2O
c)
CO2
d)
NO
25.
Which of the following is an example of a COVALENT COMPOUND?
a)
H2S
b)
KI
c)
CaCl2
d)
MgO
26.

Elements are essentially sharing electrons equally...

a)

Nonpolar

b)

Polar

c)

Transferring

d)
27.

In the case of polar covalent, one atom has a greater attraction for electrons in the other atom, so the electrons are shared...

a)

Unequally

b)

Equally

28.

Ionic bond...

a)

Metal and nonmetal

b)

2 nonmetals

29.

Covalent bond

a)

2 nonmetals

b)

Non-metal and metal

30.

All ionic compounds are...

a)

Nuetral

b)

Negative

c)

Positive

31.

What is true for both covalent and ionic compounds?

a)

Want to achieve stability

b)

Octet in valence energy level

c)

Attain noble gas formation

d)

Polar and nonpolar

e)
32.

Who give up their electrons easily?

a)

Losers

b)

Metals

c)

Non Metals

d)

Nobel gases

33.

Valence electrons are: 

a)

Non-bonding electrons

b)

Bonding electrons

c)

Outermost electrons

d)

Innermost electrons

34.

Electron Shells are the ___ of an atom.

a)

Energy levels

b)

assets

c)

Cats

d)

Valance electrons

35.

All of the elements in a period have the same number of _____.

a)

Number of electrons

b)

Number of shells

c)

Number of protons

d)

Number of cars

36.
If an atom loses two electrons what charge will it have?
a)
-2
b)
-1
c)
+1
d)
+2
37.
If an atom gains two electrons what charge will it have?
a)
-2
b)
-1
c)
+1
d)
+2
38.

What kind of bond forms when atoms transfer electrons?

a)
ionic
b)
covalent
c)

metallic

d)

molecular

39.

Which of the following describes covalent bonds?

a)

Bonds form because of opposite charges

b)

electrons are shared to fill outer electron shells

c)

Electrons are transferred between atoms

d)

Covalent bonds are magical

40.

The octet rules states that most elements want to have _____ valence electrons.

a)

2

b)

4

c)

6

d)

8

41.
Predict the bond that will form between Be and F.
a)
Ionic
b)
Covalent
42.
Predict the bond that will form between Se and Cl.
a)
Ionic
b)
Covalent
43.

How many valence electrons does Oxygen (O) have?

a)

6

b)

8

c)

15

d)

16

44.

Which two statements are correct about the figure shown?

a)

It is a covalent bond.

b)

Hydrogen atoms loss electrons and Carbon gains the atoms.

c)

It happens on metal and on another non-metal.

d)

The valence electrons are shared by both atoms.

45.

Check all that characterizes an ionic compound.

a)

Hard

b)

non-conductor of heat and electricity

c)

High melting and boiling points

d)

non-soluble in water

46.

Check two general properties of a molecular compound.

a)

Hard

b)

Soft

c)

Low melting point

d)

poor conductor of electricity when in solid state.

47.
Nitrogen will ____ valence electrons when forming an ionic bond.
a)
gain 1
b)
lose 1
c)
gain 3
d)
lose 3
48.
What type of bond is illustrated above?
a)
Metallic
b)
Ionic
c)
Covalent
d)
Wiggly
49.

A mixture of two or elements at least one of which is a metal is called

a)

an ion

b)

an alloy

c)

steel

d)

a crystal

50.
A solid substance is an excellent conductor of electricity. The chemical bonds in this substance are most likely?
a)
ionic, because the valence electrons are shared between atoms
b)
covalent, because the valence electrons are mobile
c)
metallic, because the valence electrons are stationary
d)
metallic, because the valence electrons are mobile
51.
What is the basis of a metallic bond?
a)
the attraction of neutral metal atoms.
b)
the attraction between protons and neutrons.
c)
the attraction between positive metal ions and interlocking electrons.
d)
the attraction between positive metal ions and free floating electrons.
52.
There are more metals than non metals in the periodic table.
a)
True
b)
False
53.
What does malleable mean?
a)
able to be shaped
b)
will break easily
c)
can be used for wire
d)
is shiny
54.
At room temperature, most metals are
a)
liquid
b)
solid
c)
gas
d)
an alloy
55.

Which of these are considered properties of metals? (choose ALL that apply)

a)

brittleness

b)

low melting point

c)

luster (shininess)

d)

malleability

e)

ductility

56.
Why are alloys generally used to make everyday objects?
a)
Alloys are often stronger and less active than pure metals.
b)
Alloys have higher melting point than pure metals.
c)
Alloys are less expensive to produce than pure metals.
d)
Alloys have ionic bonds instead of metallic bonds.
57.

What type of bonding does this picture show?

a)

Ionic

b)

Covalent

58.

What type of bonding does this picture show?

a)

Ionic

b)

Covalent

59.

Carbon and Oxygen will make a ___________ bond.

a)

ionic

b)

covalent

c)

metallic

60.

Sodium and Bromine will make a _____ bond.

a)

ionic

b)

covalent

c)

metallic

61.

A bond that forms when electrons are unequally shared is called _________.

a)

polar

b)

non-polar

c)

ionic

d)

metallic

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