© 2015 pearson education, inc. chapter 7 chemical reactions laurie leblanc cuyamaca college clicker...

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Chapter 7

ChemicalReactions

Laurie LeBlancCuyamaca College

Clicker Questions

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A. Formation of a precipitateB. Color changeC. Emission of lightD. Evolution of gasE. All of the above

Which of the following is evidence that a chemical reaction has occurred?

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A. Formation of a precipitateB. Color changeC. Emission of lightD. Evolution of gasE. All of the above

Which of the following is evidence that a chemical reaction has occurred?

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A. Digesting a candy barB. Burning propane in a gas stoveC. Grinding coffee beansD. Baking a cakeE. Tarnishing of silverware

Which of the following is NOT an example of a chemical reaction?

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A. Digesting a candy barB. Burning propane in a gas stoveC. Grinding coffee beansD. Baking a cakeE. Tarnishing of silverware

Which of the following is NOT an example of a chemical reaction?

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A. Changing the subscripts to balance an equation is acceptable.

B. The products are listed on the left and the reactants are listed on the right.

C. Atoms are conserved when balancing a chemical equation.

D. Coefficients can be fractions.E. Subscripts can be fractions.

Which of the following is true?

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A. Changing the subscripts to balance an equation is acceptable.

B. The products are listed on the left and the reactants are listed on the right.

C. Atoms are conserved when balancing a chemical equation.

D. Coefficients can be fractions.E. Subscripts can be fractions.

Which of the following is true?

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A. 1B. 2C. 3D. 4E. 6

What is the coefficient for aluminum after the following equation is balanced?

Al + O2 → Al2O3

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A. 1B. 2C. 3D. 4E. 6

What is the coefficient for aluminum after the following equation is balanced?

Al + O2 → Al2O3

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A. 4B. 6C. 12D. 8E. 10

What is the sum of the coefficients after the following equation is balanced?

Al2O3 + H2SO4 → Al2(SO4)3 + H2O

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A. 4B. 6C. 12D. 8E. 10

What is the sum of the coefficients after the following equation is balanced?

Al2O3 + H2SO4 → Al2(SO4)3 + H2O

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A. 0.66B. 1.0C. 1.66D. 1.5E. 2.5

When the following equation is balanced, what is the ratio of oxygen molecules to water molecules?

C5H10 + O2 → CO2 + H2O

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A. 0.66B. 1.0C. 1.66D. 1.5E. 2.5

When the following equation is balanced, what is the ratio of oxygen molecules to water molecules?

C5H10 + O2 → CO2 + H2O

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A. CaBr2

B. NaNO3

C. C6H12O6

D. Two are strong electrolytesE. All of the above

Which of the following compounds is a strong electrolyte?

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A. CaBr2

B. NaNO3

C. C6H12O6

D. Two are strong electrolytesE. All of the above

Which of the following compounds is a strong electrolyte?

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A. Li2SO4

B. KOHC. CaCO3

D. NH4NO3

E. NaCl

Which of the following compounds is INSOLUBLE in water?

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A. Li2SO4

B. KOHC. CaCO3

D. NH4NO3

E. NaCl

Which of the following compounds is INSOLUBLE in water?

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A. electrical compound.B. strong electrolyte.C. weak electrolyte.D. weak cation.E. nonelectrolyte.

A substance dissolved in water that CANNOT conduct an electric current is called a(n)

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A. electrical compound.B. strong electrolyte.C. weak electrolyte.D. weak cation.E. nonelectrolyte.

A substance dissolved in water that CANNOT conduct an electric current is called a(n)

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A. left to form another precipitate.B. only anions.C. only cations.D. removed from the solution.E. left dissolved in the solution.

The ions that do not directly form the precipitate during a precipitation reaction are

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A. left to form another precipitate.B. only anions.C. only cations.D. removed from the solution.E. left dissolved in the solution.

The ions that do not directly form the precipitate during a precipitation reaction are

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A. CaNO3

B. AgClC. Ca(NO3)2

D. AgCl2E. CaAg

Identify the solid product formed from the balanced reaction of silver nitrate and calcium chloride.

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A. CaNO3

B. AgClC. Ca(NO3)2

D. AgCl2E. CaAg

Identify the solid product formed from the balanced reaction of silver nitrate and calcium chloride.

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A. KClB. BaNO3

C. K2Cl

D. Ba(NO3)2

E. No solid is formed.

Identify the solid product formed from the balanced reaction of potassium nitrate and barium chloride.

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A. KClB. BaNO3

C. K2Cl

D. Ba(NO3)2

E. No solid is formed.

Identify the solid product formed from the balanced reaction of potassium nitrate and barium chloride.

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A. Ba2SO4(s)

B. NaCl(aq)C. BaSO4(aq)

D. NaCl(s)E. SO2(g)

Which of the following is a product for the following reaction?

BaCl2(aq) + Na2SO4(aq) →

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A. Ba2SO4(s)

B. NaCl(aq)C. BaSO4(aq)

D. NaCl(s)E. SO2(g)

Which of the following is a product for the following reaction?

BaCl2(aq) + Na2SO4(aq) →

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A. Mg2+(aq)B. OH–(aq)C. Mg(OH)2(s)

D. Two of the aboveE. All of the above

Which of the following is a term in the complete ionic equation for the following reaction?

LiOH(aq) + MgCl2(aq) →

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A. Mg2+(aq)B. OH–(aq)C. Mg(OH)2(s)

D. Two of the aboveE. All of the above

Which of the following is a term in the complete ionic equation for the following reaction?

LiOH(aq) + MgCl2(aq) →

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A. KNO3(s)

B. N3–(aq)C. PbI2(aq)

D. PbI(s) E. None of the above

Which of the following is a term in the complete ionic equation for the following reaction?

KI(aq) + Pb(NO3)2(aq) →

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A. KNO3(s)

B. N3–(aq)C. PbI2(aq)

D. PbI(s) E. None of the above

Which of the following is a term in the complete ionic equation for the following reaction?

KI(aq) + Pb(NO3)2(aq) →

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A. Li+ and H+ B. Li+ and NO3

–

C. Li+ and OH–

D. H+ and OH–

E. All of the above

What are the spectator ions for the following reaction?

LiOH(aq) + HNO3(aq) →

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A. Li+ and H+ B. Li+ and NO3

–

C. Li+ and OH–

D. H+ and OH–

E. All of the above

What are the spectator ions for the following reaction?

LiOH(aq) + HNO3(aq) →

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A. HClB. NaClC. Al(NO3)3

D. H2O

E. NH4Cl

Which of the following is a nonelectrolyte in an aqueous solution?

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A. HClB. NaClC. Al(NO3)3

D. H2O

E. NH4Cl

Which of the following is a nonelectrolyte in an aqueous solution?

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A. WaterB. Sodium chlorideC. Potassium perchlorateD. Potassium hydrideE. Potassium chlorate

What salt is formed from the neutralization reaction between perchloric acid and potassium hydroxide?

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A. WaterB. Sodium chlorideC. Potassium perchlorateD. Potassium hydrideE. Potassium chlorate

What salt is formed from the neutralization reaction between perchloric acid and potassium hydroxide?

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A. WaterB. Sodium chlorideC. OxygenD. Carbon dioxideE. Ammonium chloride

When an acid reacts with a base, what product is typically formed?

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A. WaterB. Sodium chlorideC. OxygenD. Carbon dioxideE. Ammonium chloride

When an acid reacts with a base, what product is typically formed?

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A. AmmoniaB. Nitrogen dioxideC. HydrogenD. Carbon dioxideE. Nitrogen

Which gas is released from the reaction of calcium carbonate with nitric acid?

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A. AmmoniaB. Nitrogen dioxideC. HydrogenD. Carbon dioxideE. Nitrogen

Which gas is released from the reaction of calcium carbonate with nitric acid?

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A. 1B. 3C. 4D. 5E. 6

How many molecules of carbon dioxide are produced from the combustion of one molecule of propane (C3H8)?

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A. 1B. 3C. 4D. 5E. 6

How many molecules of carbon dioxide are produced from the combustion of one molecule of propane (C3H8)?

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A. PrecipitationB. Acid–baseC. Oxidation–reductionD. Double displacementE. Two of the above

What type of reaction occurs between Ba(NO3)2 and K2CrO4?

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A. PrecipitationB. Acid–baseC. Oxidation–reductionD. Double displacementE. Two of the above

What type of reaction occurs between Ba(NO3)2 and K2CrO4?

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A. Synthesis/combinationB. DecompositionC. Single displacementD. Double displacementE. Two of the above

What type of reaction is the following?

HgO (s) → Hg(l) + O2(g)

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A. Synthesis/combinationB. DecompositionC. Single displacementD. Double displacementE. Two of the above

What type of reaction is the following?

HgO (s) → Hg(l) + O2(g)

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A. Oxidation–reductionB. CombustionC. Synthesis/combinationD. All of the aboveE. Two of the above

What type of reaction is the following? 4Fe(s) + O2(g) → 2Fe2O3(s)

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A. Oxidation–reductionB. CombustionC. Synthesis/combinationD. All of the aboveE. Two of the above

What type of reaction is the following? 4Fe(s) + O2(g) → 2Fe2O3(s)

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A. PrecipitationB. Acid–baseC. Double displacementD. Single displacementE. Two of the above

What type of reaction is the following?

Fe(s) + 2HCl(aq) → FeCl2(aq) + H2(g)

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A. PrecipitationB. Acid–baseC. Double displacementD. Single displacementE. Two of the above

What type of reaction is the following?

Fe(s) + 2HCl(aq) → FeCl2(aq) + H2(g)

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A. Na2SO4

B. H2SO4

C. SO2 gas

D. NaNO2

E. N2 gas

When NaHSO3 reacts with HNO3, what product is formed?

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A. Na2SO4

B. H2SO4

C. SO2 gas

D. NaNO2

E. N2 gas

When NaHSO3 reacts with HNO3, what product is formed?

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A. H2O

B. SO2 gas

C. K2SO4

D. Two of the aboveE. None of the above

When sulfuric acid reacts with potassium hydroxide, what product is formed?

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A. H2O

B. SO2 gas

C. K2SO4

D. Two of the aboveE. None of the above

When sulfuric acid reacts with potassium hydroxide, what product is formed?

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A. oxygen reacts with another substance.

B. electrons are transferred from one reactant to another.

C. a nonmetal and a metal react.D. All of the above

Redox reactions are those in which

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A. oxygen reacts with another substance.

B. electrons are transferred from one reactant to another.

C. a nonmetal and a metal react.D. All of the above

Redox reactions are those in which

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A. NaI(aq) + PbNO3(aq)

B. CuCl2(aq) + K2CO3(aq)

C. Mg(s) + O2(g)

D. HCl(aq) + NaOH(aq)E. All of the above

Which of the following sets of reactants will result in a redox reaction?

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A. NaI(aq) + PbNO3(aq)

B. CuCl2(aq) + K2CO3(aq)

C. Mg(s) + O2(g)

D. HCl(aq) + NaOH(aq)E. All of the above

Which of the following sets of reactants will result in a redox reaction?

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A. CH4(g) and O2(g)

B. H2(g) and O2(g)

C. CO2(g) and H2O(g)

D. C2H6(g)

E. None of the above

When compounds containing carbon and hydrogen react with oxygen in combustion reactions what is/are produced?

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A. CH4(g) and O2(g)

B. H2(g) and O2(g)

C. CO2(g) and H2O(g)

D. C2H6(g)

E. None of the above

When compounds containing carbon and hydrogen react with oxygen in combustion reactions what is/are produced?