Energetics

Question 1

Exothermic process

Answer 1

A process in which heat is released by the system to the surroundings, and hence the temperature of the surroundings increases

Question 2

Endothermic process

Answer 2

A process in which heat is absorbed by the system from the surroundings, and hence the temperature of the surroundings decreases.

Question 3

Enthalpy

Answer 3

Enthalpy indicates the total energy stored in a system under certain conditions

Question 4

Bond enthalpy

Answer 4

Bond enthalpy is the enersy needed
to break one mole of bonds in saseors molecrles under standard conditions

Question 5

Atomization

Answer 5

It is a process which gaseous atoms are formed from its constituent species (atom or molecule)
of the element. endothermic

Question 6

Ionization

Answer 6

It is a process which electron(s) is/are removed from its saseors atoms or ions. It is therefore
an endothermic

Question 7

Abstraction of electron

Answer 7

It is a process which saseors atoms or ions receive electron(s) to form anions.

Question 8

Entropy

Answer 8

it is a measure of the number of
possible microscopic arrangements. It quantifies the level of randomness / disorderness in a system. It therefore helps predict the direction of chance.

Question 9

Gibbs’ free energy

Answer 9

It is the energy which is free to do useful work