Question 1

When the equation Sb2S3 + HCl → SbCl3 + H2S is balanced, the coefficient of HCl is

Accepted Answer

A)  1. 
B)  6. 
C)  2. 
D)  4. 
A)  1. 
B)  6. 
C)  2. 
D)  4.

Question 2

Which of the following compounds would you expect to be soluble in water?

Accepted Answer

A)  PbCO3 
B)  Ag2CO3 
C)  CuCO3 
D)  K2CO3 
A)  PbCO3 
B)  Ag2CO3 
C)  CuCO3 
D)  K2CO3

Question 3

When there is a net absorption of energy in a chemical reaction, it is called a(n) ______________ reaction.

Accepted Answer

A)  exothermic 
B)  activation 
C)  endothermic 
D)  combustion 
A)  exothermic 
B)  activation 
C)  endothermic 
D)  combustion

Question 4

Water solutions of which of the following are basic?

Accepted Answer

A)  Soft drinks 
B)  Baking soda 
C)  Lemonade 
D)  Vinegar 
A)  Soft drinks 
B)  Baking soda 
C)  Lemonade 
D)  Vinegar

Question 5

When solutions of AgNO3 and CaCl2 are mixed, which type of reaction is likely?

Accepted Answer

A)  Combination 
B)  Double-replacement 
C)  Decomposition 
D)  Single-replacement 
A)  Combination 
B)  Double-replacement 
C)  Decomposition 
D)  Single-replacement

Question 6

When the equation Ga + Br2 → GaBr3 is balanced, the total of all the coefficients (both written and "understood") is

Accepted Answer

A)  4. 
B)  3. 
C)  6. 
D)  7. 
A)  4. 
B)  3. 
C)  6. 
D)  7.

Question 7

Balance the chemical equation: Cu + Al2O3 → CuO + Al

Accepted Answer

3Cu + Al<s

Question 8

When the equation Sb2S3 + HCl → SbCl3 + H2S is balanced, the coefficient of SbCl3 is

Accepted Answer

A)  3. 
B)  1. 
C)  2. 
D)  4. 
A)  3. 
B)  1. 
C)  2. 
D)  4.

Question 9

Which of the following does not take place in a chemical reaction?

Accepted Answer

A)  New substances are formed. 
B)  Neutrons are released. 
C)  Energy is released or absorbed. 
D)  Reactants disappear. 
A)  New substances are formed. 
B)  Neutrons are released. 
C)  Energy is released or absorbed. 
D)  Reactants disappear.

Question 10

Which of the following is a weak acid?

Accepted Answer

A)  Hydrochloric acid 
B)  Nitric acid 
C)  Sulfuric acid 
D)  Acetic acid 
A)  Hydrochloric acid 
B)  Nitric acid 
C)  Sulfuric acid 
D)  Acetic acid

Question 11

A weak acid is one that does not

Accepted Answer

A)  taste very sour. 
B)  ionize appreciably in water. 
C)  form hydrogen gas when a metal is dropped in. 
D)  neutralize OH- ions. 
A)  taste very sour. 
B)  ionize appreciably in water. 
C)  form hydrogen gas when a metal is dropped in. 
D)  neutralize OH- ions.

Question 12

The coefficients needed to balance the reaction Sb2S3 + HCl → SbCl3 + H2S are, respectively,

Accepted Answer

A)  1, 2, 1, and 1. 
B)  2, 1, 3, and 1. 
C)  1, 2, 1, and 3. 
D)  1, 6, 2, and 3. 
E)  1, 1, 1, and 1. 
A)  1, 2, 1, and 1. 
B)  2, 1, 3, and 1. 
C)  1, 2, 1, and 3. 
D)  1, 6, 2, and 3. 
E)  1, 1, 1, and 1.

Question 13

An ionic compound formed from a cation other than H+ and an anion other than OH- is called a(n) ______________.

Accepted Answer

Question 14

Changes that alter the chemical composition of a substance are known as ______________ changes.

Accepted Answer

The answer of Changes that alter the chemical composition of...

Question 15

Name four factors that influence the rate of chemical reactions.

Accepted Answer

Temperature, concent

Question 16

______________ properties are those that do not describe the chemical reactivity of the substance.

Accepted Answer

The answer of ______________ properties are those that do not...

Question 17

According to the Arrhenius theory, basic properties are caused by ______________ ions.

Accepted Answer

The answer of According to the Arrhenius theory, basic properties...

Question 18

By definition, the gain of electrons by an atom or ion is called

Accepted Answer

A)  neutralization. 
B)  reduction. 
C)  oxidation. 
D)  displacement. 
A)  neutralization. 
B)  reduction. 
C)  oxidation. 
D)  displacement.

Question 19

Which type of reaction is AlCl3 + 3KOH → Al(OH)3 + 3KCl?

Accepted Answer

A)  Single-replacement 
B)  Double-replacement 
C)  Decomposition 
D)  Combination 
A)  Single-replacement 
B)  Double-replacement 
C)  Decomposition 
D)  Combination

Question 20

Complete and balance the equation: Ba(NO3)2(aq) + K2CO3(aq) → ______________________

Accepted Answer

Ba(NO₃)₂

Exam 13: Chemical Reactions

When the equation Sb2S3 + HCl → SbCl3 + H2S is balanced, the coefficient of HCl is

Which of the following compounds would you expect to be soluble in water?

When there is a net absorption of energy in a chemical reaction, it is called a(n) ______________ reaction.

Water solutions of which of the following are basic?

When solutions of AgNO3 and CaCl2 are mixed, which type of reaction is likely?

When the equation Ga + Br2 → GaBr3 is balanced, the total of all the coefficients (both written and "understood") is

Balance the chemical equation: Cu + Al2O3 → CuO + Al

When the equation Sb2S3 + HCl → SbCl3 + H2S is balanced, the coefficient of SbCl3 is

Which of the following does not take place in a chemical reaction?

Which of the following is a weak acid?

A weak acid is one that does not

The coefficients needed to balance the reaction Sb2S3 + HCl → SbCl3 + H2S are, respectively,

An ionic compound formed from a cation other than H+ and an anion other than OH- is called a(n) ______________.

Changes that alter the chemical composition of a substance are known as ______________ changes.

Name four factors that influence the rate of chemical reactions.

______________ properties are those that do not describe the chemical reactivity of the substance.

According to the Arrhenius theory, basic properties are caused by ______________ ions.

By definition, the gain of electrons by an atom or ion is called

Which type of reaction is AlCl3 + 3KOH → Al(OH)3 + 3KCl?

Complete and balance the equation: Ba(NO3)2(aq) + K2CO3(aq) → ______________________

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When the equation Sb₂S₃ + HCl → SbCl₃ + H₂S is balanced, the coefficient of HCl is

When solutions of AgNO₃ and CaCl₂ are mixed, which type of reaction is likely?

When the equation Ga + Br₂ → GaBr₃ is balanced, the total of all the coefficients (both written and "understood") is

Balance the chemical equation: Cu + Al₂O₃ → CuO + Al

When the equation Sb₂S₃ + HCl → SbCl₃ + H₂S is balanced, the coefficient of SbCl₃ is

The coefficients needed to balance the reaction Sb₂S₃ + HCl → SbCl₃ + H₂S are, respectively,

An ionic compound formed from a cation other than H⁺ and an anion other than OH^- is called a(n) ______________.

Which type of reaction is AlCl₃ + 3KOH → Al(OH)₃ + 3KCl?

Complete and balance the equation: Ba(NO₃)₂(aq) + K₂CO₃(aq) → ______________________