Free Printable Chem B Final Review

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Worksheets

Chem B Final Review

Total questions: 40

Worksheet time: 2hrs 36mins

Name

Class

Date

1.

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

a)

the product is doubled

b)

the product is half the mass of the reactants

c)

the mass is the same

d)

the mass changes depending on the reaction

2.

Balance this equation:

_SnO₂+_H₂--> _Sn +_H₂O

a)

1,1,2,1

b)

1,2,1,1

c)

1,2,1,2

d)

1,2,2,1

3.

Is this equation balanced?

a)

yes

b)

no

c)

Not enough information

4.

Identify the type of reaction below:

2 H₂O₂ ---> 2H₂O + O₂

a)

decomposition

b)

synthesis

c)

single replacement

d)

double replacement

5.

Identify the type of reaction below:

4 Fe + 3O₂ ---> 2 Fe₂O₃

a)

decomposition

b)

combustion

c)

synthesis

d)

single replacement

6.

Identify the type of reaction below:

2 Al + 3 CuCl₂ ----> 3 Cu + 2 AlCl₃

a)

combustion

b)

synthesis

c)

double replacement

d)

single replacement

7.

Identify the type of reaction below:

AgNO₃ + NaCl ---> AgCl + NaNO₃

a)

double replacement

b)

single replacement

c)

combustion

d)

decomposition

8.

Identify the type of reaction below:

C₃H₈ + 5 O₂ ---> 3 CO₂ + 4 H₂O

a)

single replacement

b)

double replacement

c)

combustion

d)

decomposition

9.

How do you determine if an element is strong enough to replace another element in a single replacement reaction?

a)

Solubility Rules

b)

Ionic Charges

c)

It must be insoluble!

d)

Activity Series

10.

Which element is highest in reactivity?

a)

Gold

b)

Lithium

c)

Lead

d)

Iron

11.

What are the products of this single replacement reaction:

Mg + CuSO₄--> ?

a)

Cu + MgSO₄

b)

Cu + SO₄Mg

c)

Cu + Mg(SO₄)₂

d)

No Reaction

12.

Is AgCl soluble or insoluble?

a)

Soluble

b)

Insoluble

c)

Neither

d)

Both

13.

Is NaCl soluble or insoluble?

a)

Soluble

b)

Insoluble

c)

Neither

d)

Soluble and Insoluble

14.

What is the state of matter symbol for an insoluble compound?

a)

(s)

b)

(aq)

c)

(g)

d)

(l)

15.

What is a precipitate?

a)

A solid formed from a single replacement reaction

b)

An aqueous compound formed from single replacement reaction

c)

An aqueous compound formed from double replacement reaction

d)

A solid formed from a double replacement reaction

16.

How do you determine the states of matter of the products in a double replacement reaction?

a)

Oxidation Number

b)

Activity Series

c)

Solubility Rules

d)

Ionic Charges

17.

What precipitate forms when you mix Pb(NO₃)₂ with NaCl?

a)

sodium nitrate

b)

lead (II) chloride

c)

sodium lead

d)

chloride nitrate

18.

What are the spectator ions in this reaction?

CuCl₂(aq) + NaOH(aq) → Cu(OH)₂(s) + NaCl(aq)

a)

Cu²⁺ and OH^1-

b)

Na²⁺ and Cl^2-

c)

Na¹⁺ and Cl^1-

d)

Na¹⁺ and OH^1-

19.

What are the units for molar mass?

a)

grams

b)

amu

c)

grams/mole

d)

liters

20.

How many moles are in 19.82 g Mg?

a)

1.226mol Mg

b)

481.7mol Mg

c)

1.000mol Mg

d)

0.8156 mol Mg

21.

How many moles are in 3.01 x 10²² atoms of K₂SO₄?

a)

0.050 moles

b)

1.81 x 10⁴⁶ moles

c)

5.00 x 10²¹ moles

d)

5.00 moles

22.

How many grams are in 1.2 x 10²⁴ atoms of C?

a)

28 grams

b)

24 grams

c)

6.02 grams

d)

1.2 grams

23.

How many particles are in 13.5 grams of Be?

a)

1.5 particles

b)

9 particles

c)

4.01x10²³ particles

d)

9.03x10²³ particles

24.

What is the molar mass of Zn(C₂H₃O₂)₂?

a)

392.8g/mol

b)

142.9g/mol

c)

361g/mol

d)

183.5 g/mol

25.

Find the molarity of 186.55 g of sucrose, C₁₂H₂₂O₁₁ (MM = 342), in 250 mL of water.

a)

2.18 M

b)

0.746 M

c)

1.18 M

d)

0.545 M

26.

How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?

a)

1074 mol

b)

0.069 mol

c)

1.07 mol

d)

62.7 mol

27.

What is the % Calcium in Ca(OH)₂

a)

74.10%

b)

45.91%

c)

54.09%

d)

100%

28.

In the equation below, what is the mole ratio of aluminum to oxygen?

2 Al₂O₃ --> 4 Al + 3 O₂

a)

10:6

b)

3:4

c)

4:3

d)

2:3

29.

When 12 moles of O₂ reacts with 1.1 mole of C₁₀H₈,what is the limiting reactant?

C₁₀H₈ + 12 O₂ --> 10 CO₂ + 4 H₂O

a)

Oxygen

b)

C₁₀H₈

c)

Water

d)

Carbon Dioxide

30.

Theoretical yield = 73g

Actual yield = 62g

Calculate the percent yield.

a)

1.16%

b)

116%

c)

85%

d)

76%

31.

Determine the mass (g) of Ca(OH)₂produced when 0.64 g of water reacts according to the following equation:

CaC₂ + 2 H₂O --> Ca(OH)₂ + C₂H₂

a)

10.31 g Ca(OH)₂

b)

41.31 g Ca(OH)₂

c)

1.31 g Ca(OH)₂

d)

31 g Ca(OH)₂

32.

2H₂ + O₂ → 2H₂O
How many moles of water can be produced if 8 moles H₂ are used?

a)

4 moles

b)

8 moles

c)

16 moles

d)

2 moles

33.

How many grams of H₂O will react with 4.5 moles of CO₂?
CO₂ + H₂O --> H₂CO₃

a)

0.25 g

b)

4.00 g

c)

81.09 g

d)

15.9 g

34.

If you increase the pressure of a constant volume of gas, what will happen to the temperature?

a)

Increase

b)

Decrease

c)

Stay the same

d)

It will Blow Up

35.

What will happen to the volume of a gas under constant temperature if the pressure increases?

a)

Increase

b)

Decrease

c)

Nothing

d)

Explosion!

36.

What is 50 C in Kelvin?

a)

223

b)

323

c)

100

d)

50

37.

A gas occupies 4.98 L at 2.6 atm of pressure. What volume does it occupy at 1.8 atm pressure?

a)

12.9 L

b)

0.72 L

c)

7.2 L

d)

3.44 L

38.

There are 40 liters of helium in a balloon at 100 K. If the temperature of the balloon is increased to 200 K, what will the new volume of the balloon be?

a)

80 L

b)

45 L

c)

54 L

d)

45.33 L

39.

A gas is heated from 263K to 298K. The volume is increased from 24.0L to 35.0L. If the original pressure was 1.00 atm, what is the new pressure?

a)

0.78 atm

b)

1.65 atm

c)

1.28 atm

d)

0.61 atm

40.

Determine the Kelvin temperature required for 0.0470 mol of gas to fill a balloon to 1.20 L under .998 atm pressure.

a)

0 K

b)

107 K

c)

207 K

d)

310 K

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