Gr 11 Physical Sciences: Ch 11 Sum Types of reactions

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What is the primary goal of balancing redox reactions?

To ensure the number of electrons lost in oxidation equals the number of electrons gained in reduction (correct)

To identify the type of reaction

To identify the reactants and products

To determine the rate of the reaction

In which step of balancing redox reactions do you add water molecules?

Step 1: Write the Half-Reactions

Step 2: Balance Atoms in Each Half-Reaction

Step 3: Balance Oxygen Atoms (correct)

Step 6: Equalize the Number of Electrons

What is the role of H+ ions in balancing redox reactions in acidic medium?

To balance oxygen atoms

To balance charges

To balance electrons

To balance hydrogen atoms (correct)

What is the term for the process of burning fuels, which involves redox reactions?

Combustion Signup and view all the answers

What is the role of OH- ions in balancing redox reactions in basic medium?

To balance hydrogen atoms Signup and view all the answers

What is the result of oxidation in a redox reaction?

Increase in oxidation number Signup and view all the answers

In which step of balancing redox reactions do you balance the charges?

Step 5: Balance the Charges Signup and view all the answers

What is the term for the process of rusting of iron, which involves redox reactions?

Corrosion Signup and view all the answers

What is the reaction between an acid and a base known as?

Neutralization reaction Signup and view all the answers

What is the characteristic of acids according to the Arrhenius definition?

They increase the concentration of H3O+ ions in solution Signup and view all the answers

Which of the following is an example of an amphoteric substance?

Water (H2O) Signup and view all the answers

What happens when an acid reacts with a metal hydroxide?

A salt and water are formed Signup and view all the answers

What is the term for a substance that can donate or accept protons?

Amphiprotic Signup and view all the answers

What is the definition of oxidation in a redox reaction?

The loss of electrons by a molecule, atom, or ion Signup and view all the answers

What is the oxidation number of oxygen in most compounds?

-2 Signup and view all the answers

Which of the following is an example of a polyprotic acid?

Sulfuric acid (H2SO4) Signup and view all the answers

What is the purpose of assigning oxidation numbers in redox reactions?

To track electron transfer Signup and view all the answers

What is the term for two species that transform into each other by gain or loss of a proton?

Conjugate acid-base pair Signup and view all the answers

What happens to the oxidation state of a substance when it is reduced?

It decreases Signup and view all the answers

According to the Bronsted-Lowry definition, what is an acid?

A proton donor Signup and view all the answers

What is the sum of oxidation numbers for all atoms in a neutral molecule?

Zero Signup and view all the answers

Which of the following is NOT a characteristic of an acid?

Soapy feel Signup and view all the answers

What is the reaction between hydrochloric acid and sodium hydroxide?

A neutralization reaction Signup and view all the answers

What is the term for the process by which an acid donates a proton and becomes a base?

Protonation Signup and view all the answers

What is the oxidation number of fluorine in its compounds?

-1 Signup and view all the answers

How do you determine the oxidation number of an atom in a compound?

Assign known values and solve for the unknown Signup and view all the answers

In which step of balancing redox reactions do you balance atoms except for hydrogen and oxygen?

Step 2: Balance Atoms in Each Half-Reaction Signup and view all the answers

What is the purpose of adding electrons to one side of each half-reaction in balancing redox reactions?

To balance the charges Signup and view all the answers

Which of the following is an example of a redox reaction in a biological process?

Respiration Signup and view all the answers

In which medium do you use OH- ions to balance hydrogen atoms?

Basic medium Signup and view all the answers

What is the result of combining the half-reactions in balancing redox reactions?

The overall redox reaction Signup and view all the answers

Which of the following is NOT a step in balancing redox reactions?

Determine the Oxidation Numbers Signup and view all the answers

What is the term for the process where electron transfer occurs through an external circuit?

Electrochemistry Signup and view all the answers

What is the final step in balancing redox reactions?

Verify the Balance Signup and view all the answers

Which of the following substances is an example of an acid and a base?

Water (H2O) Signup and view all the answers

What is the term for an acid that can donate more than one proton?

Polyprotic acid Signup and view all the answers

What is the characteristic of bases according to the Arrhenius definition?

Increase the concentration of OH− ions in solution Signup and view all the answers

Which of the following is a characteristic of an acid according to the Bronsted-Lowry definition?

Proton donors Signup and view all the answers

What is the term for a substance that can act as both an acid and a base?

Amphoteric Signup and view all the answers

Which of the following is an example of a conjugate acid-base pair?

H2SO4 and SO42- Signup and view all the answers

What is the definition of an acid according to the early definition?

Sour taste Signup and view all the answers

Which of the following is a characteristic of a base according to the early definition?

Soapy feel Signup and view all the answers

What is the general equation for the reaction between an acid and a metal oxide?

2yH+(aq) + MxOy(aq) → yH2O(l) + xMn+(aq) Signup and view all the answers

What occurs when a substance is oxidized in a redox reaction?

It loses electrons and increases its oxidation state Signup and view all the answers

What is the oxidation number of hydrogen in most compounds?

+1 Signup and view all the answers

What is the purpose of assigning oxidation numbers in redox reactions?

To track electron transfer and identify oxidation and reduction Signup and view all the answers

What is the general equation for the reaction between an acid and a metal hydroxide?

nH+(aq) + M(OH)n(aq) → nH2O(l) + Mn+(aq) Signup and view all the answers

What is the sum of oxidation numbers for all atoms in a polyatomic ion?

The charge of the ion Signup and view all the answers

What is the characteristic of redox reactions?

They involve the transfer of electrons Signup and view all the answers

What is the oxidation number of oxygen in peroxides?

-1 Signup and view all the answers

What happens when a substance is reduced in a redox reaction?

It gains electrons and decreases its oxidation state Signup and view all the answers

What is the general equation for the reaction between an acid and a metal carbonate?

2H+(aq) + MCO3(aq) → H2O(l) + CO2(g) + M2+(aq) Signup and view all the answers

Which of the following statements is true about Arrhenius definition?

Acids increase the concentration of H3O+ ions in solution. Signup and view all the answers

What is unique about amphoteric substances?

They can act as both acids and bases, depending on the reaction. Signup and view all the answers

What is the type of acid that can donate more than one proton?

Polyprotic acid Signup and view all the answers

What is the term for two species that transform into each other by gain or loss of a proton?

Conjugate acid-base pair Signup and view all the answers

Which of the following is an example of an amphiprotic substance?

Water (H2O) Signup and view all the answers

According to the Bronsted-Lowry definition, what is a base?

A substance that accepts a proton. Signup and view all the answers

What is the characteristic of acids according to the early definition?

Sour taste Signup and view all the answers

Which of the following is NOT a characteristic of an amphoteric substance?

Can only act as a strong acid. Signup and view all the answers

What is the primary purpose of balancing the atoms in each half-reaction?

To balance the number of atoms of each element in the reaction Signup and view all the answers

In which step of balancing redox reactions do you add electrons to one side of each half-reaction?

Step 5: Balance the Charges Signup and view all the answers

What is the primary difference between balancing redox reactions in acidic and basic media?

The way hydrogen and oxygen atoms are balanced Signup and view all the answers

What is the role of water molecules in balancing redox reactions?

To balance oxygen atoms Signup and view all the answers

Which of the following biological processes involves redox reactions?

Respiration Signup and view all the answers

What is the purpose of multiplying the half-reactions by coefficients in balancing redox reactions?

To equalize the number of electrons Signup and view all the answers

What is the result of combining the half-reactions in balancing redox reactions?

A balanced overall reaction Signup and view all the answers

Which of the following is an example of an electrochemical process?

Electroplating Signup and view all the answers

What is the primary difference between acid-base reactions and redox reactions?

The change in oxidation state of the reacting species Signup and view all the answers

Which of the following is NOT a characteristic of a redox reaction?

The involvement of acid-base chemistry Signup and view all the answers

What is the purpose of assigning oxidation numbers in redox reactions?

To track the transfer of electrons between reacting species Signup and view all the answers

Which of the following is an example of a redox reaction involving the oxidation of a metal?

The reaction between copper and oxygen Signup and view all the answers

What is the general equation for the reaction between an acid and a metal carbonate?

2H+ (aq) + MCO3 (aq) → H2O (l) + CO2 (g) + M^2+ (aq) Signup and view all the answers

Which of the following is a characteristic of oxidation in a redox reaction?

The loss of electrons by a reacting species Signup and view all the answers

What is the oxidation number of oxygen in a compound?

-2 Signup and view all the answers

Which of the following is an example of a redox reaction involving the reduction of a metal ion?

The reaction between copper(II) sulfate and zinc Signup and view all the answers

What is the purpose of using the rules for determining oxidation numbers in redox reactions?

To track the transfer of electrons between reacting species Signup and view all the answers

Which of the following is a characteristic of reduction in a redox reaction?

The gain of electrons by a reacting species Signup and view all the answers

Gr 11 Physical Sciences: Ch 11 Sum Types of reactions

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Questions and Answers

What is the primary goal of balancing redox reactions?

In which step of balancing redox reactions do you add water molecules?

What is the role of H+ ions in balancing redox reactions in acidic medium?

What is the term for the process of burning fuels, which involves redox reactions?

What is the role of OH- ions in balancing redox reactions in basic medium?

What is the result of oxidation in a redox reaction?

In which step of balancing redox reactions do you balance the charges?

What is the term for the process of rusting of iron, which involves redox reactions?

What is the reaction between an acid and a base known as?

What is the characteristic of acids according to the Arrhenius definition?

Which of the following is an example of an amphoteric substance?

What happens when an acid reacts with a metal hydroxide?

What is the term for a substance that can donate or accept protons?

What is the definition of oxidation in a redox reaction?

What is the oxidation number of oxygen in most compounds?

Which of the following is an example of a polyprotic acid?

What is the purpose of assigning oxidation numbers in redox reactions?

What is the term for two species that transform into each other by gain or loss of a proton?

What happens to the oxidation state of a substance when it is reduced?

According to the Bronsted-Lowry definition, what is an acid?

What is the sum of oxidation numbers for all atoms in a neutral molecule?

Which of the following is NOT a characteristic of an acid?

What is the reaction between hydrochloric acid and sodium hydroxide?

What is the term for the process by which an acid donates a proton and becomes a base?

What is the oxidation number of fluorine in its compounds?

How do you determine the oxidation number of an atom in a compound?

In which step of balancing redox reactions do you balance atoms except for hydrogen and oxygen?

What is the purpose of adding electrons to one side of each half-reaction in balancing redox reactions?

Which of the following is an example of a redox reaction in a biological process?

In which medium do you use OH- ions to balance hydrogen atoms?

What is the result of combining the half-reactions in balancing redox reactions?

Which of the following is NOT a step in balancing redox reactions?

What is the term for the process where electron transfer occurs through an external circuit?

What is the final step in balancing redox reactions?

Which of the following substances is an example of an acid and a base?

What is the term for an acid that can donate more than one proton?

What is the characteristic of bases according to the Arrhenius definition?

Which of the following is a characteristic of an acid according to the Bronsted-Lowry definition?

What is the term for a substance that can act as both an acid and a base?

Which of the following is an example of a conjugate acid-base pair?

What is the definition of an acid according to the early definition?

Which of the following is a characteristic of a base according to the early definition?

What is the general equation for the reaction between an acid and a metal oxide?

What occurs when a substance is oxidized in a redox reaction?

What is the oxidation number of hydrogen in most compounds?

What is the purpose of assigning oxidation numbers in redox reactions?

What is the general equation for the reaction between an acid and a metal hydroxide?

What is the sum of oxidation numbers for all atoms in a polyatomic ion?

What is the characteristic of redox reactions?

What is the oxidation number of oxygen in peroxides?

What happens when a substance is reduced in a redox reaction?

What is the general equation for the reaction between an acid and a metal carbonate?

Which of the following statements is true about Arrhenius definition?

What is unique about amphoteric substances?

What is the type of acid that can donate more than one proton?

What is the term for two species that transform into each other by gain or loss of a proton?

Which of the following is an example of an amphiprotic substance?

According to the Bronsted-Lowry definition, what is a base?

What is the characteristic of acids according to the early definition?

Which of the following is NOT a characteristic of an amphoteric substance?

What is the primary purpose of balancing the atoms in each half-reaction?

In which step of balancing redox reactions do you add electrons to one side of each half-reaction?

What is the primary difference between balancing redox reactions in acidic and basic media?

What is the role of water molecules in balancing redox reactions?

Which of the following biological processes involves redox reactions?

What is the purpose of multiplying the half-reactions by coefficients in balancing redox reactions?

What is the result of combining the half-reactions in balancing redox reactions?

Which of the following is an example of an electrochemical process?

What is the primary difference between acid-base reactions and redox reactions?

Which of the following is NOT a characteristic of a redox reaction?

What is the purpose of assigning oxidation numbers in redox reactions?

Which of the following is an example of a redox reaction involving the oxidation of a metal?

What is the general equation for the reaction between an acid and a metal carbonate?

Which of the following is a characteristic of oxidation in a redox reaction?

What is the oxidation number of oxygen in a compound?

Which of the following is an example of a redox reaction involving the reduction of a metal ion?

What is the purpose of using the rules for determining oxidation numbers in redox reactions?