Oxidation Reduction Redox

If an atom loses electrons during a chemical reaction, the atom was:

• Oxidized

• Reduced

• Neutralized

• Precipitated

Gaining oxygen is an example of...

• oxidation

• reduction

Which statement is true:
Mg → Mg²⁺ + 2e^–

• Mg gains 2 electrons

• Mg_²⁺ loses 2 electrons

• Mg loses 1 electron

• Mg loses 2 electrons

Tags

NGSS.HS-PS1-2

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

• It donates electrons.

• It accepts electrons.

• It donates protons.

• It accepts protons.

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

• Zinc (Zn)

• Copper (Cu)

• Sulphur (S)

• Oxygen (O)

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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

• It donates electrons.

• It accepts electrons.

• It donates protons.

• It accepts protons.

Which of the following equations is a balanced redox equation?

Tags

NGSS.HS-PS1-7

• Sodium (Na)

• Chlorine (Cl)

• Sodium chloride (NaCl)

• None

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

• None