Redox Reactions Review

Fill in the blank:

A redox reaction involves transfer of ______ from one reactant to another.

• electrons

• neutrons

• protons

Oxidation half-reaction involves ______ of electron/s.

• gain

• loss

Tags

NGSS.HS-PS1-7

Study this half-reaction:

Cu → Cu²⁺ + 2e^-

Which statement is INCORRECT?

• Two electrons are released.

• Copper becomes more positively-charged.

• Copper is reduced.

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

What was produced on the copper electrode?

• Zn

• Zn²⁺

• H⁺

• H²

Which of the following is an example of a redox reaction involving a metal and a non-metal?

What is the role of an oxidising agent in a redox reaction?

• It donates electrons.

• It accepts electrons.

• It donates protons.

• It accepts protons.

What is the role of a reducing agent in a redox reaction?

• It donates electrons.

• It accepts electrons.

• It donates protons.

• It accepts protons.

• None

• Sodium (Na)

• Chlorine (Cl)

• Sodium chloride (NaCl)

• None

• Iron (Fe)

• Carbon (C)

• Oxygen (O)