Classifying Chemical Reactions

Classifying Chemical Reactions

Multiple Choice

What class of reaction best describes the equation below?

CH₄ + O₂ ⟶ CO₂ + H₂O

• single replacement

• double replacement

• decomposition

• combustion

Multiple Choice

A + BC →B + AC

• Single Replacement

• Decomposition

• Double Replacement

• Synthesis

Multiple Choice

Which of the following is the general formula for a decomposition reaction?

• A + B → AB

• AB → A + B

• AB + C → AC + B

• AB + CD → AC + BD

Multiple Choice

Which of the following is an example of synthesis?

• Na + Br₂ --> NaBr

• KClO₃ --> KCl + O₂

• HgO + Cl₂-->HgCl + O₂

• Cl₂ + NaBr --> NaCl + Br₂

Multiple Choice

Which chemical reaction breaks down into 2 substances?

• Double displacement

• Single displacement

• Synthesis

• Decomposition

Multiple Choice

2 RbNO₃ + BeF₂ --> Be(NO₃)₂ + 2 RbF

• single displacement

• double displacment

• decomposition

• synthesis

Multiple Choice

2 C₅H₅ + Fe --> Fe(C₅H₅)₂

• single displacement

• double displacement

• decomposition

• synthesis

Multiple Choice

Identify this type of reaction,

Cl₂ + 2KI _--> I₂ + 2KCl

• Synthesis

• Single displacement

• Double displacement

• Decomposition

Multiple Choice

AB + CD →AD + CB

• Double Replacement

• Single Replacement

• Synthesis

• Decomposition

Multiple Choice

Based on the activity series, will this reaction occur?

Cd (s) + HCl (aq) →

• Yes

• No

Multiple Choice

Based on the activity series, will this reaction occur?

Ni (s) + H₂O (l) →

• Yes

• No

Multiple Choice

Based on the activity series, will this reaction occur?

Br₂ (l) + KI (aq) →

• Yes

• No

Multiple Choice

Based on the activity series, will this reaction occur?

Au (s) + HCl (l) →

• Yes

• No

Multiple Choice

KOH

• Soluble

• Insoluble

Multiple Choice

Zinc Carbonate

• Soluble

• Insoluble

Multiple Choice

Silver Iodide

• Soluble

• Insoluble

Multiple Choice

KBr

• Soluble

• Insoluble

Multiple Choice

Which is the correct net ionic equation for the following reaction?

2 AgNO_3(aq) + CaCl_2(aq) --> 2 AgCl_(s) + Ca(NO₃)_2(aq)

• Ca²⁺(aq) + 2Cl^- (aq) → CaCl(s)

• Ag⁺(aq) + Cl^- (aq) → AgCl(s)

• Ag + Cl → AgCl

• Ag⁺ + Ca²⁺ →Ag₂Ca (s)

Multiple Choice

A chemical reaction between an acid and a base, forming a salt and water is known as ____.

• ionization

• concentration

• neutralization

• animation

Multiple Choice

Which of the following is a neutralization reaction?

• 2Na + Cl₂ → 2NaCl

• CH₄ + 2O₂ → CO₂ + 2H₂O

• HCl + KOH → KCl + H₂O

• CaCO₃ → CO₂ + CaO

Multiple Choice

Reduction is the ___________ of electrons.

• loss

• gain

• sharing

• transfer

Multiple Choice

Oxidation is the _________ of electrons.

• loss

• gain

• sharing

• transfer

Multiple Choice

What is oxidation number of Mn in MnO₂ ?

• 0

• +2

• -2

• +4

Multiple Choice

What is the oxidation number of Fe in FeO?

• +1

• -1

• +2

• -2

Multiple Choice

If in a reaction, copper is reduced; its number of electrons has:

• Increased

• Decreased

• Remained Constant

• Varies Randomly

Multiple Choice

Which statement is true:

Mg → Mg²⁺ + 2e^–

• Mg gains 2 electrons

• Mg²⁺ loses 2 electrons

• Mg loses 1 electron

• Mg loses 2 electrons

Multiple Choice

What is the oxidation number of nitrogen in N₂?

• -3

• 0

• +4

• -1