Oxidation Definition

In this chemical reaction, which is the product/s?

Magnesium + Oxygen --> Magnesium oxide

• magnesium

• magnesium and oxygen

• magnesium oxide

• oxygen

Tags

NGSS.MS-PS1-1

Which of the following defines oxidation?

• A chemical reaction where a substance gains oxygen.
• A chemical reaction where a substance loses oxygen.
• A chemical reaction where a substance loses a metal.
• A chemical reaction where a substance gains a metal.

Which of the following is an example of an oxidation reaction?

• Ca + O₂ --> CaO

• Na₂O + H₂O --> NaOH

• Fe₂O₃ + CO --> Fe + CO₂

• All of the choices are oxidation reactions.

The rusting of iron is an example of

• a reduction reaction.
• an oxidation reaction.
• a reaction of iron with water.
• a reaction that dissolves iron.

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

• Oxidized
• Reduced
• Neutralized
• Precipitated

Tags

NGSS.HS-PS1-2

In the reaction Zn + H₂O --> ZnO₂ + H₂

which element, if any, is oxidised?

• Zinc

• Hydrogen

• Oxygen

• None

Another name for a "oxidation-reduction" reaction is

• chemical reaction
• neutralization reaction
• redox reaction
• nuclear reaction

What substance is oxidized in the following reaction?
4Fe + 3O₂ --> 2Fe₂O₃

• Iron
• Fluorine
• Oxygen

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Why is this equation an example of reduction ?

Na⁺ + e^- → Na

• The Sodium atom is gaining an electron

• The Sodium atom is losing an electron

• The Sodium ion is gaining an electron

• The Sodium ion is losing an electron

Tags

NGSS.HS-PS1-2

Why is this equation an example of Oxidation ?

2O^2- - 4e- → O₂

• It shows that oxide ions are losing electrons

• It shows that oxide ions are gaining electrons

• It shows that oxygen atoms are losing electrons

• It shows that oxygen atoms are gaining electrons

Tags

NGSS.HS-PS1-1