Question 1

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.

Question 2

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

Accepted Answer

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

Question 3

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

Accepted Answer

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

Question 4

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

Accepted Answer

Question 5

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

Accepted Answer

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

Question 6

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

Question 7

Name four factors that influence the rate of chemical reactions.

Accepted Answer

Temperature, concent...

Question 8

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.

Question 9

______________ 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 10

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

Accepted Answer

3Cu + Al<s...

Question 11

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 12

Water solutions of which of the following are basic?

Accepted Answer

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

Question 13

Which of the following is a weak acid?

Accepted Answer

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

Question 14

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

Question 15

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

Accepted Answer

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

Question 16

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

Accepted Answer

Ba(NO₃)₂...

Question 17

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.

Question 18

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.

Question 19

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

Accepted Answer

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

Question 20

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

Accepted Answer

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

Exam 13: Chemical Reactions

Which of the following is a weak acid?

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

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Name four factors that influence the rate of chemical reactions.

Correct AnswerverifiedTemperature, concent...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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

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

Correct AnswerverifiedBa(NO3)2...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct Answerverified3Cu + AlView AnswerShow Answer

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

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

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

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

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Water solutions of which of the following are basic?

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

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

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

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

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

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A weak acid is one that does not

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

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

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

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Ba(NO₃)₂...
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Balance the chemical equation: Cu + Al₂O₃ → CuO + Al

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3Cu + Al
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When the equation Sb₂S₃ + HCl → SbCl₃ + H₂S is balanced, the coefficient of SbCl₃ is

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

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

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

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

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

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