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Knowledge Check (Bonding Basics)

Total questions: 56

Worksheet time: 56mins

Name
Class
Date
1.

When an atom loses an electron, it becomes a:

a)

positive ion

b)

negative ion

c)

neutral ion

d)

neutral atom

2.

When an atom gains an electron, it becomes a:

a)

positive ion

b)

negative ion

c)

neutral ion

d)

neutral atom

3.
An ionic bond is the attraction between:
a)
oppositely charged ions
b)
similarly charged ions
c)
neutral ions
d)
neutral atoms
4.

Ionic bonds form between a

a)

two metals

b)

nonmetal and nonmetal

c)

metal and nonmetal

d)

two metalloids

5.

Covalent bonds form between a

a)

nonmetal and nonmetal

b)

metal and nonmetal

c)

two metals

d)

two metalloids

6.

According the "Octet rule", how many valence electrons does an atom need to have a stable electron configuration?

a)

1

b)

5

c)

8

d)

10

7.

Which group in the periodic table has elements with a stable electron structure? (Full outer shell)

a)

Group 1

b)

Group 2

c)

Group 14

d)

Group 18 (Noble Gases)

8.

H and He are exceptions to the Octet Rule. How many electrons can they have in their outer shell?

a)

1

b)

2

c)

8

d)

10

9.

How does Lithium become an ion?

a)

Lose 1 electron

b)

Gain 7 electrons

c)

Lose 3 electrons

d)

Gain 1 electron

10.

How does Fluorine become an ion?

a)

Gain 1 electron

b)

Lose 1 electron

c)

Lose 7 electrons

d)

Lose 2 electrons

11.

When a bond is formed, energy is _____________.

a)

absorbed

b)

released

12.

When a bond is broken, energy is _____________.

a)

absorbed

b)

released

13.

All chemical bonds involve

a)

valence electrons

b)

protons

c)

neutrons

14.

In an Ionic bond, electrons _______________ between atoms.

a)

are shared

b)

are transferred

c)

flow freely

15.

In Covalent bond, electrons _______________ between atoms.

a)

are shared

b)

are transferred

c)

flow freely

16.

Chemical reactivity is determined by

a)

the atomic number.

b)

the total number of electrons.

c)

the neutrons.

d)

the valence electrons.

17.

Which of the below is an ionic compounds?

a)

Ni

b)

MgCl2

c)

H2O

d)

CH4

18.

How many valence electrons does Boron (B) have?

a)

5

b)

13

c)

3

d)

11

19.
When two atoms share electrons, a chemical bond is formed.  This type of bond is called:
a)
covalent bond
b)
ionic bond
c)
crystal bond
d)
polyatomic bond
20.
Atoms with a strong attraction for electrons they share with another atom exhibit
a)
zero electronegativity
b)
low electronegativity
c)
high electronegativity
d)
negative electronegativity
21.
How many valence electrons does Oxygen have?
a)
8
b)
2
c)
16
d)
6
22.
Which element does this structure represent?
a)
Lithium
b)
Helium
c)
Scandium
d)
Fluorine
23.
What group does this element belong to?
a)
Group 1: Alkali metals
b)
Group 18: Noble Gases
c)
Group 2: Alkaline-Earth Metals
d)
Group 17: Halogens
24.
Why do elements bond?
a)
To be friends
b)
To create a new element
c)
To become stable
25.
Where are the nonmetals located on the periodic table? 
a)
Blue
b)
Red
c)
Green
26.
Where are metals located on the periodic table?
a)
Blue
b)
Green
c)
Red
27.

CaCl2

a)

Ionic Compound

b)

Covalent Compound

28.

CO2

a)

Ionic Compound

b)

Covalent Compound

29.

The overall charge of an ionic compound is always _______.

a)

positive (+)

b)

neutral (0)

c)

negative (-)

30.

When Calcium (Ca) loses 2 electrons, what charge does it have?

a)

+2

b)

+1

c)

0

d)

-1

31.

When Oxygen (O) gains 2 electrons, what charge does it have?

a)

+2

b)

+1

c)

-1

d)

-2

32.

1 covalent bond = ________________

a)

1 shared electron

b)

2 shared electrons

c)

3 shared electrons

d)

4 shared electrons

33.

How many bonds are there in the compound CH3Cl?

a)

3

b)

4

c)

6

d)

7

34.

Predict the bond that will form between Cl and Cl.

a)

Ionic

b)

Covalent

35.
Predict the bond that will form between Be and F.
a)
Ionic
b)
Covalent
36.
What charges attract?
a)
Opposite
b)
Same
37.

How many valence electrons does carbon have?

a)

4

b)

5

c)

6

d)

7

38.

Which type of bond is best represented in the picture

a)

Covalent

b)

Polar Covalent

c)

Ionic

d)

Metallic

39.

Which type of bond is best represented in the picture

a)

Covalent

b)

Polar Covalent

c)

Ionic

d)

Metallic

40.

Electronegativity increases...

a)

To the right across a period and down a group

b)

To the right across a period and up a group

c)

To the left across a period and down a group

d)

To the left across a period and up a group

41.
What best describes valence electrons?
a)
Electrons in the inner-most shell.
b)
Electrons in the outer-most shell.
c)
Electron that became a beta particle.
42.

This could be the dot diagram of

a)

Mg

b)

Cl

c)

C

d)

O

43.

What is the goal of the Lewis Dot Structure?

a)

To determine the electron position.

b)

To show the element's valence electrons & bonding capabilities.

c)

To find the atomic mass of an element.

d)

To search for the number of electrons in an individual atom.

44.

This is a correct dot diagram for nitrogen (N)

a)

true

b)

false

45.

This is a correct dot diagram for neon (Ne)

a)

true

b)

false

46.

How would you draw a Lewis dot diagram for Magnesium?

a)
b)
c)
d)
47.

Metals make _____ ions.

a)

positive

b)

negative

c)

neutral

48.

Nonmetals will make _____ions.

a)

positive

b)

negative

c)

neutral

49.

How many valence electrons should Oxygen have in its Lewis dot model?

a)

5

b)

6

c)

7

d)

8

50.

This is a correct dot diagram for carbon (C)

a)

true

b)

false

51.
This is a correct dot diagram for oxygen (O)
a)
true
b)
false
52.
This is a correct dot diagram for fluorine (F)
a)
true
b)
false
53.

Which Lewis Dot Diagram would represent Chlorine?

a)
b)
c)
d)
54.

What element does this Lewis Dot Digram represent?

a)

Li

b)

Al

c)

C

d)

Be

55.

This could be the dot diagram of

a)

Si

b)

Br

c)

B

d)

S

56.

How many valence electrons does Arsenic (As) have?

a)

5

b)

3

c)

7

d)

6

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