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Bonding and Chemical Reactions Review

Total questions: 53

Worksheet time: 55mins

Name
Class
Date
1.

What is the correct chemical formula for the butane molecule shown?

a)

C4H10

b)

C10H10

c)

C4H4

d)

C10H4

2.

In the diagram, letter D represents a

a)

subscript

b)

coefficient

c)

product

d)

equation

3.

In the diagram, letter E represents a

a)

subscript

b)

coefficient

c)

product

d)

equation

4.
Which are the reactants in the equation shown?
a)
H2O and CO2
b)
O2 and CH4
5.

Which is the product in the reaction shown?

a)

Al2O3

b)

Al

c)

O2

6.

How many hydrogen MOLECULES are shown in the reactants?

a)

2

b)

3

c)

1

d)

4

7.
What describes the reactant atoms in the equation shown?
a)
Al= 4, O= 3
b)
Al= 1, O= 1
c)
Al= 4, O= 6
d)
Al= 6, O= 1
8.

How does the mass of products compare to the mass of reactants in a chemical reaction?

a)

reactants = products

b)

reactants > products

c)

reactants < products

9.
This equation is _________.
a)
balanced
b)
not balanced
10.

4 HBO2 → H2B4O7 +  H2O

This equation is _________.

a)

balanced

b)

not balanced

11.
This equation is _________.
a)
balanced
b)
not balanced
12.

Mg + 2HCl --> MgCl2 + H2

This equation is _________.

a)

balanced

b)

not balanced

13.

Choose the correct coefficients that balance the following equation.

Ca + N2 --->Ca3N2

a)

1,3,3

b)

2,3,1

c)

3,1,1

d)

4,1,3

14.

Select the coefficients to balance the following equation.

___Al + ___Ag(NO3) --> __Ag + __Al(NO3)3

a)

3,1,1,3

b)

1,3,3,1

c)

1,2,2,1

d)

2,1,1,2

15.

Balance the following equation.

Al + S--> Al2S3

a)

2,2,1

b)

2,4,1

c)

2,3,1

d)

3,1,1

16.

What are the coefficients if the following equation is properly balanced?

Al + O2 → Al2O3

a)

4:3:2

b)

2:3:2

c)

2:1:1

d)

8:6:4

17.
Which of the following is NOT an indication of a chemical reaction?
a)
Formation of a precipitate
b)
Formation of a gas (bubbling)
c)
Heat is given off
d)
Mixing two chemicals together
18.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
19.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
20.
Number of C's in 2Na₂CO₃
a)
1
b)
2
c)
3
d)
5
21.
How many Magnesium are in 10MgCl2?
a)
10
b)
5
c)
20
22.
The law of conservation of matter states that
a)
chemical reactions change matter.
b)
in chemical reactions, the identity of reactants and products is conserved.
c)
atoms are neither created nor destroyed in chemical reactions.
d)
a chemical equation must be balanced.
23.

Balance this equation:

Li + Cl2 -> LiCl

a)

2Li + Cl2 -> 4LiCl2

b)

2Li + Cl2 -> LiCl2

c)

2Li + Cl2 -> 2LiCl

24.
Balance this reaction: ____ AlBr3 + ____ K2SO4 ---> ____ KBr + ____ Al2(SO4)3
a)
1,1,1,1
b)
2,3,6,1
c)
2,6,1,1
d)
3,1,2,2
25.
Balance this reaction: ____ NaF + ____ Br2 ---> ____ NaBr + ____ F2
a)
3,1,2,1
b)
1,2,3,4
c)
2,1,2,1
d)
1,2,1,2
26.
How many elements are in C6H12O6?
a)
1
b)
3
c)
12
d)
24
27.
When balancing equations what does
 -->
mean?
a)
subscript
b)
equals
c)
it is just an arrow
d)
yield
28.
Name one diatomic molecule
a)
hydrogen
b)
neon
c)
carbon
d)
sodium
29.
Which of the following has a full valence shell?
a)
Oxygen
b)
Neon
c)
Barium
d)
Carbon
30.
If an atom loses two electrons what charge will it have?
a)
+ 2
b)
 - 2
c)
+1
d)
-1
31.
What is the chemical name for the compound with the formula Na₂S?
a)
sodium sulfide
b)
sodium fluoride
c)
magnesium sulfide
d)
lithium oxide
32.
What is the name of PS3?
a)
phosphorus trisulfide
b)
phosphorus chloride
c)
phosphide trisulfide
d)
phosphate
33.
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.
34.
This could be the dot diagram of
a)
Ne
b)
H
c)
C
d)
F
35.
How many more valence electrons does Oxygen need to be stable?
a)
6
b)
2
c)
4
d)
It's already stable with 8
36.
Name this compound:   MgS
a)
Sulfur Magnesium
b)
Magnesium Sulfate
c)
Magnesium Sulfur
d)
Magnesium Sulfide
37.
If an atom gains one electron what charge will it have?
a)
-2
b)
-1
c)
+1
38.
Covalent compounds
a)
Share electrons
b)
transfer electrons
c)
contain a sea of electrons
d)
conduct electricity
39.
Which of the following is an example of an IONIC COMPOUND?
a)
NaCl
b)
H2O
c)
CO2
d)
NO
40.
Which of the following is an example of a COVALENT COMPOUND?
a)
H2S
b)
KI
c)
CaCl2
d)
MgO
41.
The compound formed between lithium and chlorine is _________.
a)
ionic
b)
covalent
42.
Nitrogen will form which of the following ions?
a)
N
b)
N-3
c)
N-5
d)
N+5
43.
In the compound aluminum oxide, which is the cation?
a)
Al+3
b)
Al
c)
O-2
d)
O
44.
Which of the following would produce an anion?
a)
Ca
b)
Al
c)
K
d)
F
45.
How do the following two elements bond together?
Al3+  O2-         
a)
AlO
b)
Al2O3
c)
Al3O6
d)
Al3O2
46.
What is the formula of Sodium oxide?
a)
Na2O
b)
NaO2
c)
Na2O2
d)
Na2O
47.
Which is the correct name for CaBr2?
a)
Calcium Bromine
b)
Bromine Calcium
c)
Calcium Bromide
d)
Carbon and Bromine
48.
Write the formula for barium + nitrogen
a)
Ba2N3
b)
Ba3N2
c)
BaN
d)
BaN3
49.
What is the formula for magnesium phosphide?
a)
Mg3P2
b)
Mg2P3
c)
Mg2(PO4)3
d)
Mg3(PO4)2
50.
What is the name for LiI?
a)
lithium oxide
b)
lithium iodide
c)
lithium monoiodide
d)
monolithium iodide
51.
Which of the following elements wants to bond 3 times
a)
Oxygen
b)
Phosphorous
c)
Fluorine
d)
Germanium
52.
What is the name of this Compound
a)
P2O5
b)
Phosphorous PentaOxide
c)
Diphosphorous pentaoxide
d)
Phosphourous Oxide
53.
Which of these would be covalently bonded
a)
Fr and K
b)
Sc and O 
c)
F and Cl
d)
He and Pt

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