Oxidation is the _________ of electrons.

• loss

• gain

• sharing

• transfer

Reduction is the ___________ of electrons.

• loss

• gain

• sharing

• transfer

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

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

• Increased
• Decreased
• Remained Constant
• Varies Randomly

Tags

NGSS.HS-PS1-2

Another name for a "oxidation-reduction" reaction is

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

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

• Increased
• Decreased
• Remained Constant
• Varies Randomly

Tags

NGSS.HS-PS1-2

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

• Oxidized
• Reduced
• Neutralized
• Precipitated

Tags

NGSS.HS-PS1-2

A chemical reaction that involves a gain/loss of electrons is called:

• Double Replacement
• Neutralization
• Oxidation-Reduction
• Hydrolysis

Tags

NGSS.HS-PS1-2

What is the meaning of reduction?

• Gain of electron

• Gain of oxygen

• Loss of hydrogen

• Increase in oxidation number

A redox reaction is NOT:

• all reactions

• a combustion reaction

• a reduction-oxidation reaction

• a reaction in which electrons are transferred from one atom to another

Tags

NGSS.HS-PS1-2