Deck 13: Conduction in Liquids and Gases

Question 1

An example of an undesirable type of ____ is shown when there is an electrical current through the earth that can follow buried water pipes for a portion of its path.

A)electrolysis
B)erosion
C)corrosion
D)insulation

Answer 1

C

Question 2

The term ____ refers to the process of separating elements by the use of electrical energy.

A)electrolyte reduction
B)low-resistance conduction
C)electron separation
D)electrolysis

Answer 2

D

Question 3

____ is used as the electrolyte in automobile batteries.

A)Phosphoric acid
B)Chloric acid
C)Sulfuric acid
D)Cupric acid

Answer 3

C

Question 4

Corrosion is the rusting or wearing away of a metal by the formation of a chemical compound of the metal.

Question 5

If a magnesium atom loses electrons (negative charges) and is now positively charged, it is called a positive ion.

Question 6

Gas can be made to conduct a current if a moderately high voltage of ____ volts or more is applied to a gas at a low pressure inside a glass tube.

A)10
B)35
C)50
D)75

Question 7

Conduction in solutions, known as electrolytes, consists of the movement of free positive and negative ions in the same direction.

Question 8

When a gas is used as a(n) ____ between two charged plates, the current shown by the ammeter is practically zero as long as a moderate voltage is applied.

A)conductor
B)insulator
C)resistor
D)electrolyte

Question 9

Since metal ions are all positively charged, the object to be plated is connected to the ____.

A)negative wire
B)positive wire
C)node
D)generator

Question 10

A spark is a quiet, regular discharge, and successive sparks follow separate paths.

Question 11

In any electroplating process, the solution must contain the ions of the metal that is to form the coating.

Question 12

The minimum amount of energy that an electron must possess to cause ionization (removal of electrons from atoms) is called the ____ potential.

A)ionization
B)action
C)electrolytic
D)energy

Question 13

In gas at atmospheric pressure, a free electron collides with gas atoms so infrequently that it only travels long enough to gain the speed required to ionize an atom by collision.

Question 14

A ____ occurs frequently in high-voltage equipment if precautions are not taken to prevent it.

A)low-voltage spark
B)corolla
C)corona
D)collision

Question 15

The anode is the terminal or electrode where electrons enter the cell, and the cathode is the electrode that carries electrons away from the cell.

Question 16

Edison's concept of electron conduction in vacuum tubes has been applied to hundreds of devices designed to achieve specific tasks.

Question 17

In liquids and gases, the transfer of electrical charges depends on particles called ____.

A)electrolytes
B)neutrons
C)electroplates
D)ions

Question 18

Water solutions of acids, bases, and metallic salts can conduct large amounts of current and are known as ____.

A)ion particles
B)electrolytes
C)ionic solutions
D)electrons

Question 19

In solid conductors, the transfer of electrical charges is made by the movement of electrons.

Question 20

When plating an object with copper from a cyanide solution, the object to be plated must be an electrical conductor.