Redox Reactions Exit Ticket

In redox reactions the involve loss and gain of electrons,

oxidation is defined as ​ (a)  

while reduction is defined as ​ (b)  

• loss of electrons
• gain of electrons
• gain of proton
• loss of proton
• gain of neutron
• loss of neutron

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

Cl₂ + 2e- --> 2Cl ^- is an example of:

• a chemical reaction

• redox

• oxidation

• reduction

Oxidation-reduction reactions occur because of the competition between particles for...

• protons

• neutrons

• electrons

• positrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

As an element is oxidized, its oxidation number...

• increases as electrons are gained

• decreases as electrons are gained

• decreases as electrons are lost

• increases as electrons are lost

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which half-reaction correctly represents reduction?

• Ag --> Ag⁺ + e^-

• F₂ --> 2 F^- + 2e^-

• Au³⁺ + 3e^- --> Au

• Fe²⁺ + e^- --> Fe³⁺

This is the half reaction for: 
Sn(s) → Sn⁴⁺(aq) + 4e⁻

• redox
• reduction
• oxidation
• neutralization

When zinc is exposed to air, zinc oxide is produced. What happens in this reaction?

• Zinc is oxidized, and oxygen is reduced.

• Zinc is reduced, and oxygen is oxidized.

• Both zinc and oxygen are oxidized.

• Both zinc and oxygen are reduced.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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-PS1-1

NGSS.HS-PS1-2