Free Printable Chemistry Final Exam Review

1.

Match the following descriptions with the correct number of protons, neutrons, and electrons in a sodium ion (Na⁺).

a)

11, 11, 12

1.

Sodium ion with equal protons and neutrons, and more electrons

b)

11, 12, 11

2.

Sodium ion with more neutrons than protons, and equal electrons

c)

11, 12, 10

3.

Sodium ion with more neutrons than protons, and fewer electrons

d)

12, 11, 12

4.

Sodium ion with more protons than neutrons, and equal electrons

2.

Elements in the same group of the periodic table share similar properties because they have (a)

Choose from the below words

The same number of protons

The same atomic mass

The same number of valence electron

The same number of electron shells

3.

In an exothermic reaction, energy is:

a)

Released to the surroundings

b)

Absorbed from the surroundings

c)

Created

d)

Destroyed

4.

Which of the following is the correct balanced equation for the combustion of methane (CH₄)?

a)

CH₄ + O₂ → CO₂ + H₂O

b)

CH₄ + 2O₂ → CO₂ + 2H₂O

c)

CH₄ + 2O₂ → 2CO + 2H₂O

d)

2CH₄ + O₂ → 2CO₂ + H₂O

5.

Which of the following is a balanced chemical equation for the reaction between hydrogen gas and oxygen gas to form water?

a)

$2H_2 + O_2 \rightarrow 2H_2O$

b)

$H_2 + O_2 \rightarrow H_2O$

c)

$2H_2 + O_2 \rightarrow H_2O$

d)

$H_2 + 2O_2 \rightarrow 2H_2O$

6.

What is the main difference between a combustion reaction and a synthesis reaction?

a)

Combustion must involve oxygen, while synthesis does not.

b)

Synthesis produces a single product, while combustion can produce multiple products.

c)

Combustion releases energy, while synthesis absorbs energy.

d)

Synthesis involves only one reactant, while combustion requires two or more.

7.

Which of the following is an example of a single replacement reaction?

a)

$2H_2 + O_2 \rightarrow 2H_2O$

b)

$Zn + 2HCl \rightarrow ZnCl_2 + H_2$

c)

$NaCl + AgNO_3 \rightarrow NaNO_3 + AgCl$

d)

$C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O$

8.

Identify the type of reaction: $CaCO_3 \rightarrow CaO + CO_2$

a)

Synthesis

b)

Decomposition

c)

Single displacement

d)

Double displacement

9.

What type of reaction is $2K + 2H_2O \rightarrow 2KOH + H_2$ ?

a)

Synthesis

b)

Decomposition

c)

Single displacement

d)

Combustion

10.

Which of the following is an example of a double replacement reaction?

a)

$2H_2 + O_2 \rightarrow 2H_2O$

b)

$Zn + 2HCl \rightarrow ZnCl_2 + H_2$

c)

$NaCl + AgNO_3 \rightarrow NaNO_3 + AgCl$

d)

$C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O$

11.

The reaction between sodium and chlorine to form sodium chloride (NaCl) is an example of a:

a)

Single replacement reaction

b)

Double replacement reaction

c)

Combustion reaction

d)

Formation reaction

12.

Which of the following is a characteristic of a covalent bond?

a)

Transfer of electrons

b)

Sharing of electrons

c)

Formation of ions

d)

Metallic bonding

13.

Which family of elements in the periodic table is the least reactive?

a)

Alkali metals

b)

Alkaline earth metals

c)

Halogens

d)

Noble gases

14.

What type of bond is formed between a metal and a non-metal?

a)

Covalent bond

b)

Hydrogen bond

c)

Ionic bond

d)

Metallic bond

15.

Which of the following compounds is an example of a molecular compound?

a)

NaCl

b)

H₂O

c)

K₂SO₄

d)

Fe₂O₃

16.

Which of the following pH levels represents a strong base?

a)

pH 2

b)

pH 5

c)

pH 7

d)

pH 12

17.

Match the following chemical formulas with their correct names.

a)

Nitrous acid

1.

HNO₂

b)

Nitric acid

2.

HNO₃

c)

Hydrochloric acid

3.

HCl

d)

Sulfuric acid

4.

H₂SO₄

18.

Which type of reaction involves the breakdown of a compound into simpler substances?

a)

Formation reaction

b)

Decomposition reaction

c)

Single replacement reaction

d)

Double replacement reaction

19.

Balance the equation: MgCl₂(aq) + O₂(g) → MgO(s) + Cl₂(g).

4 lines

20.

Balance the equation: Al₂O₃(s) + HCl(aq) → AlCl₃(aq) + H₂O(l).

4 lines

21.

Which element is known as the 'king of chemicals' due to its wide use in industry?

a)

Hydrogen

b)

Oxygen

c)

Sulfuric acid

d)

Ammonia

22.

Which of the following is a characteristic property of acids?

a)

They turn blue litmus paper red

b)

They feel slippery to the touch

c)

They have a bitter taste

d)

They turn red litmus paper blue

23.

What is the main product formed when hydrochloric acid reacts with sodium hydroxide?

a)

Sodium chloride and water

b)

Hydrogen gas and sodium chloride

c)

Sodium hydroxide and water

d)

Chlorine gas and water

24.

Which of the following elements is most likely to form a covalent bond?

a)

Carbon

b)

Sodium

c)

Calcium

d)

Argon

25.

In a redox reaction, the substance that loses electrons is said to be:

a)

Oxidized

b)

Reduced

c)

Neutralized

d)

Precipitated

Chemistry Final Exam Review

Total questions: 25

Worksheet time: 25mins

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