Free Printable Chemistry Final Exam

1.

This arrangement of molecules represents a...

a)

solid

b)

liquid

c)

gas

d)

plasma

2.

Given the unbalanced equation: $Al + O_2 \rightarrow Al_2O_3$ , what are the correct coefficients to balance it?

a)

2, 1, 1

b)

4, 3, 2

c)

3, 2, 1

d)

1, 2, 1

3.

Which of the following pairs of elements are in the same group?

a)

Sodium and Potassium

b)

Carbon and Nitrogen

c)

Oxygen and Fluorine

d)

Magnesium and Aluminum

4.

If a solution turns red litmus paper blue, what can you conclude about the solution?

a)

It is acidic.

b)

It is basic.

c)

It is neutral.

d)

It is a salt.

5.

Which of the following best explains why the atomic radius decreases across a period?

a)

Increased number of energy levels

b)

Increased nuclear charge pulls electrons closer

c)

Decreased number of protons

d)

Increased electron shielding

6.

Which of the following is the correct balanced equation for the reaction between zinc and hydrochloric acid?

a)

$Zn + HCl \rightarrow ZnCl_2 + H_2$

b)

$2Zn + 2HCl \rightarrow 2ZnCl_2 + H_2$

c)

$Zn + 2HCl \rightarrow ZnCl_2 + H_2$

d)

$Zn + HCl \rightarrow ZnCl + H_2$

7.

Which type of reaction is represented by the equation: XY + ZW → XW + ZY?

a)

Synthesis

b)

Decomposition

c)

Single displacement

d)

Double displacement

8.

Molecules are close together and slide past each other.

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

9.

Molecules move freely in any direction.

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

10.

Which of the following is the correct balanced equation for the combustion of ethane ( $C_2H_6$ )?

a)

$C_2H_6 + O_2 \rightarrow 2CO_2 + 3H_2O$

b)

$2C_2H_6 + 7O_2 \rightarrow 4CO_2 + 6H_2O$

c)

$C_2H_6 + 2O_2 \rightarrow 2CO_2 + 2H_2O$

d)

$2C_2H_6 + 2O_2 \rightarrow 2CO_2 + 6H_2O$

11.

(Use the periodic table at the back of the book.) Which of the following best explains why alkali metals are highly reactive?

a)

They have a full outer shell.

b)

They have one electron in their outer shell.

c)

They have high ionization energy.

d)

They are gases at room temperature.

12.

Which of the following best describes the reaction represented by the equation X + Y → XY?

a)

Synthesis

b)

Neutralization

c)

Decomposition

d)

Combustion

13.

What type of reaction occurs in the following equation: $AB \rightarrow A + B$

a)

Combustion

b)

Synthesis

c)

Double Displacement

d)

Single Displacement

14.

(Use the periodic table at the back of the book.) Which of the following is a correct statement about the periodic table?

a)

Elements in the same period have similar properties.

b)

Elements in the same group have the same number of valence electrons.

c)

All metals are found on the right side.

d)

Nonmetals are found only in Group 1.

15.

Which of the following is the correct balanced equation for the reaction of magnesium with water?

a)

b)

c)

d)

16.

How many HCl molecules are needed to balance this equation?
Ca(OH)₂ + __HCl → CaCl₂ + 2H₂O

a)

1

b)

2

c)

3

d)

4

17.

Identify the part of the equation that is underlined:
2H₂O → 2NaO₂

a)

Coefficient

b)

Reactant

c)

Product

d)

Subscript

18.

Which set of coefficients will balance the following equation?

__H₂O₂ → __H₂O + __O₂

a)

2,2,1

b)

1,1,1

c)

2,1,2

d)

1,2,2

19.

Is the following equation balanced or unbalanced?
Fe + O₂ → Fe₂O₃

a)

Balanced

b)

Unbalanced

20.

(Boyle's Law) A helium gas cylinder contains 30.0 L of gas at a pressure of 120 atm. If the gas is released into a container at a pressure of 1.50 atm and the temperature remains constant, what volume in liters will the helium occupy?

a)

2,400 L

b)

2,360 L

c)

80 L

d)

18.0 L

21.

(Charles' Law: V1/T1 = V2/T2) A gas cylinder contains 80 liters of helium at 40 K. If the temperature drops to 32 K, what will be the new volume of the gas?

a)

64L

b)

72L

c)

60L

d)

80L

22.

What is the formula for Charles's Law?

a)

V1/T1 = V2 + T2

b)

V1 * T1 = V2 * T2

c)

V1/T1 + V2/T2 = 0

d)

V1/T1 = V2/T2

23.

(Boyle's Law: P₁V₁ = P₂V₂) A sample of oxygen gas occupies 300 L at a pressure of 600 mm Hg. If the pressure is changed to 900 mm Hg, what will be the new volume of the gas?

a)

200 L

b)

450 L

c)

20 L

d)

45 L

24.

What is the formula for Boyle's Law?

a)

P₁V₁ = P₂V₂

b)

P₁V₁/P₂V₂

c)

P₁V₂ = P₂V₁

d)

P₁/V₁ = P₂/V₂

25.

(Boyle's Law: P1V1 = P2V2) If 300 L of nitrogen gas at a pressure of 800 mm Hg is compressed until the pressure reaches 1200 mm Hg, what will be the new volume of the gas?

a)

200 L

b)

250 L

c)

300 L

d)

400 L

26.

Maria is exploring a sunken ship underwater. As she dives deeper, the water pressure around her increases. According to Boyle’s law, what effect does this increased pressure have on the volume of air in her diving suit?

a)

The volume of air in the suit would increase.

b)

The volume of air in the suit would remain unchanged.

c)

The volume of air in the suit would double.

d)

The volume of air in the suit would decrease.

27.

What are the correct coefficients to balance the following equation?

___ B₂ + ___ W₂ → 2 BW₃

a)

1, 3, 2

b)

2, 3, 2

c)

1, 2, 2

d)

2, 2, 2

28.

Which type of chemical reaction is illustrated in this diagram?

a)

Decomposition

b)

Double-replacement

c)

Single-replacement

d)

Synthesis

29.

A substance with a pH less than 7 is called a(n) ______.

a)

Acid

b)

Base

c)

Salt

d)

Water

30.

Which of the following would increase the pressure of a gas system?

a)

Increase the temperature

b)

Pump in more gas

c)

Decrease the volume

d)

All of these

31.

What is the center of an atom called?

a)

Electron

b)

Nucleus

c)

Proton

d)

Neutron

32.

Which subatomic particle has a negative charge?

a)

Proton

b)

Neutron

c)

Electron

d)

Nucleus

33.

(Use the periodic table located at the back of the book.) What is the atomic number of oxygen?

a)

8

b)

16

c)

6

d)

12

34.

(Use the periodic table located at the back of the book.) Which element is located in Group 2, Period 3 of the periodic table?

a)

Magnesium

b)

Calcium

c)

Beryllium

d)

Sodium

35.

(Use the periodic table located at the back of the book) What is the chemical symbol for potassium?

a)

K

b)

P

c)

Pt

d)

Po

36.

Which of the following is an example of a physical change?

a)

Rusting of iron

b)

Burning paper

c)

Boiling water

d)

Cooking an egg

37.

(Use the periodic table located at the back of the book.) What is the atomic number of silver (Ag)?

a)

47

b)

107

c)

79

d)

92

38.

Which of the following chemical equations is correctly balanced?

a)

$N_2 + 3H_2 \rightarrow 2NH_3$

b)

$N_2 + H_2 \rightarrow NH_3$

c)

$2N_2 + 3H_2 \rightarrow 2NH_3$

d)

$N_2 + 2H_2 \rightarrow 2NH_3$

39.

Which of the following best describes the pH of pure water at 25°C?

a)

Acidic

b)

Neutral

c)

Basic

d)

Strongly acidic

40.

Which of the following is a property of bases?

a)

Sour taste

b)

Turns red litmus blue

c)

Turns blue litmus red

d)

Reacts with metals to produce hydrogen gas

41.

How many protons are in an atom of oxygen? (Think Octet Rule)

a)

6

b)

8

c)

16

d)

18

42.

Which of the following are noble gases?

a)

Neon

b)

Oxygen

c)

Argon

d)

Magnesium

43.

What is the charge of a neutron?

a)

Positive

b)

Negative

c)

Neutral

d)

Double positive

44.

Which of the following best describes a period on the periodic table?

a)

A vertical column

b)

A horizontal row

c)

A group of metals

d)

A group of nonmetals

45.

How do you feel about the final exam?

a)

Fantastic

b)

Its Cool

c)

We have a final exam

d)

I would rather be on vacation.

Chemistry Final Exam

Total questions: 45

Worksheet time: 31mins

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