Chapter 21 - Electrochemistry

Question 1

electrochemical process

Answer 1

any conversion between chemical energy and electrical energy

Question 2

electrochemical cell

Answer 2

any device that converts chemical energy into electrical energy or vice-a-versa

Question 3

voltaic cell

Answer 3

(Alessandro Volta) are electrochemical cells used to convert chemical energy into electrical energy

Question 4

half - cell

Answer 4

one part of a voltaic cell in which either oxidation or reduction occurs

Question 5

salt bridge

Answer 5

half cells are connected by this… and it is mainly a tube that has a strong electrolyte

Question 6

electrode

Answer 6

is a conductor in a circuit that carries electrons to or from a substance(other than metal)

Question 7

anode

Answer 7

the electrode where oxidation occurs (negatively charged)

Question 8

cathode

Answer 8

the electrode where reduction occurs (positively charged)

Question 9

dry cell

Answer 9

is a voltaic cell in which the electrode is a paste

Question 10

battery

Answer 10

a group of cells connected together

Question 11

fuel cells

Answer 11

are voltaic cells in which fuel substance undergoes oxidation and from which electrical energy is continually obtained

Question 12

electrical potential

Answer 12

is a measure of a voltaic cells ability to produce an electric current

Question 13

reduction potential

Answer 13

the tendency of a half reaction to occur as as a reduction

Question 14

cell potential

Answer 14

the difference between the reduction potentials between the two half cells

Question 15

standard cell potential

Answer 15

(E0cell) is the measured cell potential when the ion concentration in the half cells are 1M

Question 16

standard hydrogen electrode

Answer 16

this is used with other electrodes so the reduction potential of the other cells can be measured

Question 17

electrolysis

Answer 17

the process in which electrical energy is used to bring about such a chemical change

Question 18

electrolytic cell

Answer 18

is a electrochemical cell used to cause a chemical change through the application of electrical energy