Determination of formulae - 3.2 - (2) Flashcards Preview

OCR (A) A Level Chemistry - Module 2 - Chapter 3 > Determination of formulae - 3.2 - (2) > Flashcards

Flashcards in Determination of formulae - 3.2 - (2) Deck (5)
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1
Q

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

A

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

2
Q

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

A

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

3
Q

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

A

from its ions

4
Q

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

A

from the results of experiments

5
Q

Finding formulae by experiment - What is analysis?

A

investigating the chemical composition of a substance