Oxidation Reduction Chemistry

which of these metals must be separated using electrolysis?

• potassium

• magnesium

• iron

• gold

• zinc

Tags

NGSS.HS-PS2-5

• A

• B

• C

• D

• A

• B

• C

• D

Tags

NGSS.MS-PS1-2

Which of the following statements refers to an oxidation process?

• Hydrogen is added to ethene

• Oxygen is removed from carbon dioxide

• Chlorine accepts electrons

• Increase in the oxidation number of magnesium metal

Tags

NGSS.HS-PS1-2

Which of these equations represents a redox reaction?

• Ca(HCO₃)_{2 -->} CaCO₃ + H₂O + CO₂

• CH₃COOH + NaOH --> CH₃COONa + H₂O

• Zn + 2FeCl₃ --> ZnCl₂ + 2FeCl₂

• NaCl + AgNO_{3 -->} AgCl + NaNO₃

Tags

NGSS.HS-PS1-7

What are the oxidation numbers of manganese in the manganese compounds shown below?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

A camera film is covered with silver ions that darkens upon exposure to light. The reaction that

takes place is: Ag ⁺ + e^‾ → Ag. In this reaction, silver ion acts as ____________

• reducing agent.

• dissolving agent.

• analytical agent.

• oxidizing agent

The change of I^‾ to I₂ is ________________

• oxidation

• reduction

• neutralization

• Decomposition

• Combustion

Tags

NGSS.HS-PS1-2

What is the oxidation number of Nitrogen in HNO₃

• -7

• -5

• +5

• +7

• +2

In a redox reaction, the species reduced

• gains electrons and is the oxidizing agent

• loses electrons and is the oxidizing agent

• loses electrons and is the reducing agent

• gains electrons and is the reducing agent