1. Electrolyte (give 3 examples)

2. Nonelectrolyte (give 2 examples)

1. A solute whose aqueous solution contains ions and conducts electricity (acids, bases, salt)

2. A solute whose aqueous solution does not conduct electricity (sugar, benzene, most organic compounds)

1. Anode

2. Cathode

1. A positively charged electrode which attracts anions. Where oxidation take places

2. A negatively charged electrode which attracts cations. Where reduction takes place

1. Oxidation

2. Reduction

1. The loss of electrons

2. The gain of electrons

1. Electrode potential

2. Half reaction

1. A measure in volts of the tendency of atoms to gain or lose electrons (relative to a H₂ oxidation reaction which has an assigned value of zero)

2. One of the two parts, either the reduction or the oxidation, of an oxidation - reduction reaction

Write half reactions:

1. Oxidation of sodium metal

2. Reduction of sulfur atoms

1. Na → Na⁺ + e^-

2. S + 2e^{- →} S^-2

Electrolytic reaction

Give 2 examples

Redox reactions which do not occur spontaneously can be forced to take place by supplying an external current

(electroplating, electrolysis)

A unit of electric charge which deposits by electrolysis one equivalent weight of an element

Equals 96,500 coulombs

A faraday reduces 1 equivalent weight of substance

There are 108g in 1 mole of Ag. The reaction requires 1 faraday

Voltaic cell

give 2 examples

A "battery". Spontaneous redox reactions between chemicals inside to create voltage

(lead storage batter - in cars; dry cell - for flashlights etc.)

A substance which causes another substance to be oxidized

(Oxidizing agent is simultaneously reduced)

A substance which causess another substance to be reduced

(Reducing agent is simultaneously oxidized)