FC2 DEFINITIONS

Question 1

Define ‘relative isotopic mass’

Answer 1

Relative isotopic mass is the mass of an atom of an isotope compared with 1/12 the mass of an atom of carbon-12

Question 2

Define ‘relative atomic mass (Ar)’

Answer 2

Relative atomic mass is the weighted average mass of an atom of an element compared to 1/12 the mass of an atom of carbon-12/

Question 3

Define ‘relative molecular mass’

Answer 3

Relative molecular mass is the average mass of a molecule compared to 1/12 the mass of an atom of carbon-12

Question 4

Define ‘relative formula mass’

Answer 4

Relative formula mass is the average mass of a formula of a substance compared with 1/12 the mass of an atom of carbon-12

Question 5

Define ‘mole’

Answer 5

the amount of substance that contains the same number of particles as there are atoms in 12g of carbon-12

Question 6

define ‘molar mass’

Answer 6

mass of one mole of a substance