Cambridge AS & A Level Chemistry
2.3Formulas
Formulas in Cambridge AS & A Level Chemistry: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic23 practice questions1 lesson
Learning objectives
What the syllabus expects you to be able to do.
- 2.3.1Write formulae of ionic compounds from ionic charges and oxidation numbers, predicting charges from the Periodic Table and recalling common ions.
- 2.3.2Write balanced full and ionic equations (without spectator ions) with state symbols.
- 2.3.3Define and use empirical and molecular formula.
- 2.3.4Use the terms anhydrous, hydrated and water of crystallisation.
- 2.3.5Calculate empirical and molecular formulae from data.
Lessons
- Full access
Formulae, equations, and empirical and molecular formulae
40 min
Join to read every lesson, or see what Full access includes.
Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
Turn Formulas into a strength.
Practise with instant marking, see your mastery grow and get a study plan built around your exam date.