Thermal

Question 1

Avogadro constant

Answer 1

Number of atoms in 12g of carbon 12

Question 2

One atomic mass unit

Answer 2

1/12 the mass of a C 12 atom

Question 3

Mole

Answer 3

One mole is the quantity of a substance that contains NA particles

Question 4

Molarity

Answer 4

Number of moles in a given quantity of a substance

Question 5

Molar mass

Answer 5

The mass of 1 mol of substance

kgmol^-1

Question 6

Number of moles in mass Ms of a substance

Answer 6

Ms/M

Question 7

Number of molecules in mass Ms of substance

Answer 7

NAMs/M

Question 8

Charles law

Answer 8

V/T constant

Question 9

Pressure law

Answer 9

P/T constant

Question 10

Boyles law

Answer 10

PV constant

Question 11

Ideal gas?

Answer 11

Obeys boyles law

Question 12

Ideal gas equation:

Answer 12

pV = nRT

Question 13

Density of ideal gas

Answer 13

Mass/Volume

nM/V

pM/RT

Question 14

pV=

Answer 14

NkT

Question 15

Kinetic theory equation assumptions

Answer 15

1) Brownian motion
2) elastic
3) molecules don’t attract
4) collision time shorter than moving time
5) molecules are point molecules

Question 16

1st law of thermodynamics

Answer 16

The change of internal energy of an object = the total energy transfer due to work done and heating

Question 17

Internal energy

Answer 17

Sum of the random distribution of KE and PE of its molecules

Question 18

Latent Heat of Fusion

Answer 18

Energy needed to melt a solid at its melting point

Question 19

Latent Heat of vaporisation

Answer 19

Energy needed to vaporise a liquid

Question 20

Specific latent Heat of fusion

Answer 20

Energy needed to change state of unit mass from solid to liquid without temperature change

Question 21

Specific latent Heat of vaporisation

Answer 21

Energy needed to change the state of unit mass of substance from liquid to vapour without a change in temperature