Quiz about Chemistry Electrolysis

Question 1

Electricity can be used in chemical reactions for:

Accepted Answer

All of the above

Answer

Heating substances

Answer

Electrolysis

Answer

Catalysis

Question 2

Oxidation is defined as:

Accepted Answer

the loss of electrons from an atom.

Answer

the gain of electrons by an atom.

Answer

the sharing of electrons between atoms.

Answer

the complete transfer of electrons between atoms.

Question 3

Define the term oxidation.

Accepted Answer

The process of losing electrons

Answer

The process of gaining electrons

Answer

The process of forming a covalent bond

Answer

The process of breaking a covalent bond

Question 4

Reduction in chemistry is all about the outer shell electrons. What does the term 'reduction' mean?

Accepted Answer

Gain of electrons

Answer

Loss of electrons

Answer

Sharing of electrons

Answer

No change in electrons

Question 5

Reduction is defined as:

Accepted Answer

a process of gaining electrons

Answer

a process of losing electrons

Answer

a process of gaining protons

Answer

a process of losing protons

Question 6

Describe the test for the presence of the gas inside this disastrous balloon.

Accepted Answer

The balloon contains hydrogen, and a lit splint will cause a 'pop' sound.

Answer

The balloon is filled with helium, and a lit splint will pop it.

Answer

The balloon is filled with oxygen, and a glowing splint will relight.

Answer

The balloon contains carbon dioxide, and limewater will turn milky.

Question 7

Describe the test for the presence of the gas inside this disastrous balloon.

Accepted Answer

By using a flame test

Answer

By using a litmus test

Answer

By using a water displacement test

Answer

By using a pH test

Question 8

Oxidation is defined as:

Accepted Answer

the loss of electrons by a molecule, atom, or ion

Answer

the gain of electrons by a molecule, atom, or ion

Answer

the process of a substance combining with oxygen

Answer

the transfer of protons between substances

Question 9

Reduction is defined as:

Accepted Answer

a process of gaining electrons

Answer

a process of losing electrons

Answer

a process of gaining protons

Answer

a process of losing protons

Question 10

The test for the presence of the gas inside this disastrous balloon is described as:

Accepted Answer

C. The gas extinguishes a burning splint.

Answer

A. The balloon bursts with a loud noise.

Answer

B. The gas changes the color of litmus paper.

Answer

D. The gas supports combustion.

Question 11

Electrolysis is a process that involves the passage of an electric current through a solution to cause a chemical change. What is the main purpose of electrolysis?

Accepted Answer

To cause a chemical change

Answer

To generate heat

Answer

To produce light

Answer

To create sound

Question 12

Predict the products of electrolysis.

Accepted Answer

Hydrogen and Oxygen

Answer

Sodium and Chlorine

Answer

Copper and Sulfate

Answer

Iron and Carbon

Question 13

Electrolysis involves which of the following processes?

Accepted Answer

Oxidation at the anode and reduction at the cathode

Answer

Reduction at the anode and oxidation at the cathode

Answer

Only oxidation

Answer

Only reduction

Question 14

Fill in the blank: In electrolysis, cations move towards the _______.

Accepted Answer

cathode

Answer

anode

Answer

electrolyte

Answer

battery

Question 15

Which method is used to extract metals that are more reactive than carbon?

Accepted Answer

Electrolysis of molten compounds

Answer

Reduction with carbon

Answer

Thermal decomposition

Answer

Hydraulic mining

Question 16

Which of the following metals is extracted by heating with carbon?

Accepted Answer

Zinc

Answer

Potassium

Answer

Sodium

Answer

Lithium

Question 17

Gold is more reactive than iron.

Accepted Answer

False

Answer

True

Question 18

What is electrolysis?

Accepted Answer

Electrolysis is the breaking down (splitting/decomposition) of a substance using electricity.

Answer

Electrolysis is the process of combining substances using heat.

Answer

Electrolysis is a method of filtering substances using pressure.

Answer

Electrolysis is a technique for measuring the pH level of a solution.

Question 19

What is the purpose of electrolysis?

Accepted Answer

It is used to extract a metal from an ionic compound (ore).

Answer

It is used to convert metals into their oxides.

Answer

It is used to combine metals with non-metals.

Answer

It is used to measure the electrical conductivity of a solution.

Question 20

What does 'Electro' mean in the context of electrolysis?

Accepted Answer

Electricity - the flow of electrons (e-) or ions.

Answer

A type of chemical reaction.

Answer

A form of energy storage.

Answer

A method of heat transfer.

Question 21

What is the term for a mineral that is a source of lithium?

Accepted Answer

Lithium ore

Answer

Bauxite

Answer

Hematite

Answer

Galena

Question 22

What is the name of the mineral shown in the image?

Accepted Answer

Petalite

Answer

Quartz

Answer

Feldspar

Answer

Mica

Question 23

Based on the graph, what is the trend of lithium ore and lithium metal prices from 1987 to 2011?

Accepted Answer

Increasing

Answer

Decreasing

Answer

Stable

Answer

Fluctuating

Question 24

What type of vehicle is shown in the image?

Accepted Answer

A) Electric Car

Answer

B) Gasoline Car

Answer

C) Hybrid Car

Answer

D) Diesel Car

Question 25

What is the primary component shown in the top left image?

Accepted Answer

B) Battery Pack

Answer

A) Engine

Answer

C) Transmission

Answer

D) Fuel Tank

Question 26

What type of device is shown in the bottom left image?

Accepted Answer

Smartphone

Answer

Tablet

Answer

Laptop

Answer

Smartwatch

Question 27

What is being removed in the bottom right image?

Accepted Answer

A person

Answer

A tree

Answer

A car

Answer

A building

Chemistry Electrolysis

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