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chemical bond

Total questions: 20

Worksheet time: 15mins

Name
Class
Date
1.
________ molecules are found in nature as single atom elements
a)
polyatomic
b)
monatomic
c)
elemental
d)
diatomic
2.

Which of the following types of elements can exist in nature as diatomic molecules?

a)

alkali metals

b)

transition metals

c)

halogens

d)

noble gases.

3.
Why do bonds form?
a)
To fill the valence shell of electrons for the elements involved
b)
to release energy stored in the bonds
c)
because whenever you mix two chemicals, there will be a reaction
d)
because of attraction
4.
The desire for an element to have 8 atoms around it is called 
a)
Octet Rule
b)
Resonance
c)
Ionization energy
d)
Electronegativity
5.
A substance which has a high melting point, conducts electricity when dissolved in water, and has a crystalline structure probably has what type of bond?
a)
Ionic
b)
Metallic
c)
Covalent
d)
Crystalline
6.

Bonds formed by transferring electrons from one atom to another are

a)

ionic

b)

metallic

c)

non polar covalent

d)

covalent

7.

Bonds formed by sharing electrons between atoms are

a)

ionic

b)

metallic

c)

covalent

d)

dipole-dipole

8.

A compound is made of two nonmetals. It is

a)

ionic

b)

metallic

c)

covalent

9.

A compound forms between a metal and a nonmetal. It is

a)

ionic

b)

metallic

c)

covalent

10.

Ionic compounds are held together by

a)

intermolecular forces

b)

electrostatic forces

c)

magnetic forces

d)

nuclear forces

11.
Which of the following has a full valence shell?
a)
Oxygen
b)
Neon
c)
Barium
d)
Carbon
12.

Which solid would be a good conductor?

a)

sodium chloride

b)

copper (II) sulfate

c)

glucose

d)

aluminum

13.

15. What is a valence electron?

a)

an electron that is found in the outermost shell of an atom.

b)

an electron found in the innermost shell of an atom.

c)

an electron found in the middle shell.

14.
If an atom loses two electrons what charge will it have?
a)
+ 2
b)
 - 2
c)
+1
d)
-1
15.
If an atom gains one electron what charge will it have?
a)
-2
b)
-1
c)
+1
16.
What is the formula for silicon dioxide?
a)
SO2
b)
NaO2
c)
SiO2
d)
SiO
17.
Is the following compound ionic or covalent:
AlCl3
a)
ionic 
b)
covalent
18.
What is the formula for aluminum fluoride?
a)
AlF
b)
Al2F3
c)
AlF3
d)
Al3F2
19.
The chemical formula of iron (III)bromide is
a)
FeBr
b)
Fe(III)Br
c)
FeBr₃
d)
Fe₂Br₃
20.
What type of bond is this? Lithium with Fluorine?
a)
ionic
b)
covalent

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