Determination of formulae - 3.2 - (2)

Question 1

Relative formula mass - What does the relative formula mass compare the mass of?

Answer 1

a formula unit with the mass of an atom of carbon-12

Question 2

Relative formula mass - How is the relative formula mass calculated?

Answer 2

by adding together the relative atomic masses of the elements in the empirical formula

Question 3

Finding formulae by experiment - How can you predict the formula of an ionic compound?

Answer 3

from its ions

Question 4

Finding formulae by experiment - If you do not know which ions are in a compound, how can the formula be worked out?

Answer 4

from the results of experiments

Question 5

Finding formulae by experiment - What is analysis?

Answer 5

investigating the chemical composition of a substance