L70 electrochemistry

Galvanic cells convert

• mechanical energy in to electrical energy

• potential energy in to electrical energy

• electrical energy in to chemical energy

• chemical energy in to electrical energy

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-3

In electrolysis, particles which move towards cathode are called

• anions

• cations

• photons

• positrons

Electrons always flow from

• cathode to anode

• anode to cathode

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Oxidation occurs at the

• anode

• cathode

Electrons are gained at the

• anode

• cathode

What is reduction?

• It is the gain of electrons.

• It is the loss of electrons.

• It is the creation of electrons.

• It is the destruction of electrons.

Tags

NGSS.HS-PS1-2

What is a redox reaction?

• A reaction where both reactants get reduced.

• A reaction where both reactants get oxidized.

• A reaction that involves a transfer of electrons between reactants.

• A reaction that involves the combustion of at least one reactant.

Tags

NGSS.HS-PS1-2

What is a reducing agent?

• It is the species that gets reduced -- gains electrons.

• It is the species that gets oxidized -- loses electrons.

• It is the species that creates electrons.

• It is the species that destroys electrons.

Tags

NGSS.HS-PS1-2

What is an oxidizing agent?

• It is the species that gets reduced -- gains electrons.

• It is the species that gets oxidized -- loses electrons.

• It is the species that creates electrons.

• It is the species that loses electrons.

Tags

NGSS.HS-PS1-2

Which of the following best describes the function of the portion of the electrochemical cell labeled B?

• Structure B functions to complete the electrical circuit present in the electrolytic cell.

• Structure B provides soluble anions that migrate to the anode as well as soluble cations that migrate to the cathode, thus maintaining a balance of charge in the electrolytic cell.

• Structure B provides soluble anions that migrate to the anode as well as soluble cations that migrate to the cathode, thus maintaining a balance of charge in the galvanic cell.

• Structure B provides soluble anions that migrate to the cathode as well as soluble cations that migrate to the anode, thus maintaining a charge balance in the galvanic cell.