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Assignment 3.1: Lewis Structures and Chemical Bonds

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
2.
Hydrogen needs _____ electrons in its valence shell to be stable.
a)
4
b)
6
c)
8
d)
2
3.
A covalent bond is
a)
a bond that shares electrons metallicaly
b)
A bond that shares electrons with non metals
c)
Metalloids bonding
d)
metals and nonmetals bonding
4.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
5.
Metals and nonmetals form which kind of bond?
a)
Polar covalent
b)
Ionic
c)
Non-polar covalent
d)
Metallic
6.

What is the correct Lewis Dot Structure for ammonia NH3

a)
b)
c)
d)
7.

What are valence electrons?

a)

The total number of electrons in an atom

b)

The number of electrons in the outermost shell

c)

The number of electrons in the second shell

d)

The number of protons in the outermost shell

8.

Which of the following is a correct electron dot structure?

a)
b)
c)
d)
9.

Which of the following is the correct electron dot structure for nitrogen?

a)
b)
c)
d)
10.

By replacing the element symbol, this could be the diagram of which element?

a)

O

b)

B

c)

Li

d)

Ne

11.
This could be the dot diagram of 
a)
Ne
b)
Si
c)
Al
d)
Be
12.
This is the correct dot diagram for sodium (Na)
a)
true
b)
false
13.
This is a correct dot diagram for oxygen (O)
a)
true
b)
false
14.

When forming bonds metals tend to __________.

a)

Lose electrons forming positive ions

b)

Lose electrons forming negative ions

c)

Gain electrons forming positive ions

d)

Gain electrons forming negative ions

15.
Covalent bond forms between....
a)
Nonmetals
b)
Metals
c)
Nonmetal and a Metal
d)
Metal and a Nonmetal
16.
Ionic bonds can be formed between two nonmetals.
a)
True
b)
False
17.
Beryllium will ____ valence electrons when forming an ionic bond.
a)
lose 4
b)
gain 4
c)
lose 2
d)
gain 2
18.
Elements on the LEFT side of the periodic table will most likely form:
a)
Positive ions
b)
Negative ions
c)
Neutral Ions
d)
None of these
19.
What elements generally make an ionic bond?
a)
metal and nonmetal
b)
2 nonmetals
c)
metal
d)
none of the above
20.
Predict the bond that will form between Be and F.
a)
Ionic
b)
Covalent
21.
Predict the bond that will form between Se and Cl
a)
Ionic
b)
Covalent
22.

Why do chemical bonds occur?

a)

to balance the number of electrons and neutrons in the atom

b)

to balance the number of electrons and protons in the atom

c)

to empty or fill the outer-most electron cloud

d)

to empty or fill the nucleus of the atom

23.

During an ionic bond, the electrons are ____________ between two atoms.

a)

shared

b)

transferred

c)

converted into protons

d)

converted into neutrons

24.

During a covalent bond, electrons are __________ between two atoms.

a)

converted into protons

b)

converted into neutrons

c)

shared

d)

transferred

25.

What is the correct electron-dot notation for Aluminum?

a)
b)
c)
d)

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