Free Printable Unit 4 Test Review

1.

___C₃H₈ +___O₂ --> ___CO₂ + ___H₂O

a)

1,5,3,4

b)

2,10,6,8

c)

already balanced

d)

1,5,5,4

2.

__Al + __Fe₃N₂ -->__AlN + __Fe

a)

already balanced

b)

4,2,4,6

c)

2,1,2,3

d)

1,2,1,3

3.

__H₂O₂ --> __H₂O + __O₂

a)

already balanced

b)

2,1,1

c)

2,2,1

d)

2,1,2

4.

__Na + __Cl₂ --> __NaCl

a)

1,1,2

b)

2,1,2

c)

2,1,1

d)

already balanced

5.

__NaClO₃--> __NaCl + __O₂

a)

2,2,2

b)

2,2,3

c)

3,2,2

d)

1,2,3

6.

__BF₃ + __Li₂SO₃ --> __B₂(SO₃)₃ + __LiF

a)

2,3,1,3

b)

2,3,1,6

c)

4,4,2,12

d)

3,3,1,9

7.

In this image, what are the information to the right of the arrow (in black) is called the_______.

a)

Product

b)

Reactant

c)

Chemical Subscript

8.

The law of conservation of mass states that....

a)

Matter can be made

b)

Matter can be destroyed

c)

Matter can neither be made or destroyed

d)

Matter can evaporate

9.

Is this balanced?...
Al + O₂ --> 2Al₂O₃

a)

Yes!

b)

NO!

10.

How many atoms of aluminum are on each side of the following equation: 4Al + 3O₂--> 2Al₂O₃

a)

2

b)

6

c)

1

d)

4

11.

Is the following equation balanced or unbalanced?
Fe + S --> FeS

a)

balanced

b)

unbalanced

12.

What coefficient should be used to make the following equation balanced?
N₂+O₂--> _NO

a)

1

b)

2

c)

3

d)

4

13.

What reaction has the following general formula:

AB --> A + B

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

14.

What reaction has the following general formula:

A + CD --> C + AD

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

15.

What reaction has the following general formula:

AB + CD --> CB + AD

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

16.

What reaction has the following general formula:

A + B --> AB

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

17.

What is the general reaction scheme for a single replacement reaction?

a)

A + B --> AB

b)

AB --> A + B

c)

A + CD --> C + AD

d)

AB + CD --> CB + AD

e)

$C_xH_y+O_2\ ->\ CO_2+H_2O$

18.

What is the general reaction scheme for a combination reaction?

a)

A + B --> AB

b)

AB --> A + B

c)

A + CD --> C + AD

d)

AB + CD --> CB + AD

e)

$C_xH_y+O_2\ ->\ CO_2+H_2O$

19.

What type of reaction is the following:
$2H_2+O_2->2H_2O$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

20.

What type of reaction is the following:
$BaCl_2+2KI\ ->\ 2KCl\ +\ BaI_2$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

21.

What type of reaction is the following:
$C_{11}H_{24}+17O_2->\ 11CO_2\ +\ 12H_2O$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

22.

What type of reaction is the following:
$2KI\ ->\ 2K\ +\ I_2$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

23.

What type of reaction is the following:
$2NaHCO_3->\ Na_2CO_3+CO_2+H_2O$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

24.

What type of reaction is the following:
$2C_4H_{10}\ +13O_2\ ->\ 8CO_2+10H_2O$

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

25.

What is the correct formula of magnesium sulfide?

a)

MgSO₄

b)

MgS

c)

MgSO₃

d)

Mg₂S₂

26.

What is the correct name of Cs₃N?

a)

cesium nitrate

b)

cesium nitrite

c)

cesium nitride

d)

tricesium nitride

27.

What is the correct name of Mg(C₂H₃O₂)₂?

a)

magnesium acetate

b)

magnesium carbohydroxide

c)

magnesium glucose

d)

magnesium diacetate

28.

How many atoms of oxygen are in Sr₃(PO₃)₂

a)

2

b)

3

c)

5

d)

6

29.

How many atoms of strontium are in Sr₃(PO₃)₂

a)

2

b)

3

c)

5

d)

6

30.

The smallest particle into which an element can be divided and still be the same element is a(n)

a)

proton

b)

neutron

c)

electron

d)

atom

31.

Which subatomic particle has a positive charge?

a)

proton

b)

nuetron

c)

electron

d)

atom

32.

Which subatomic particle has a neutral (0) charge?

a)

proton

b)

nuetron

c)

electron

d)

atom

33.

Which subatomic particle has a negative charge?

a)

proton

b)

neutron

c)

electron

d)

atom

34.

Why is the overall charge of an atom neutral (0)?

a)

They have the same number of protons and neutrons.

b)

They have the same number of protons and electrons.

c)

They have the same number of electrons and neutrons.

35.

The number of which subatomic particle determines the element of an atom (if it's carbon, oxygen, nitrogen, etc.)?

a)

proton

b)

neutron

c)

electron

d)

Subatomic particles do no determine the element of an atom.

Unit 4 Test Review

Total questions: 35

Worksheet time: 57mins

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