Charges on common ions and polyatomic ions
What Charges on common ions and polyatomic ions means in Chemistry A-Level, as defined for OCR.
Definition of Charges on common ions and polyatomic ions
Check what you remember
Read the wording for your board, then hide it and explain Charges on common ions and polyatomic ions in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
The correct charge is applied to each ion, including group numbers and common polyatomic ions, before combining them.
Topics that use Charges on common ions and polyatomic ions
- Compounds, formulae and equations (OCR A-Level)
Related terms
- Balanced chemical equations
- ionic equations
- Spectator ions
- State symbols
- ammonium ion
- carbonate ion
- Distinguishing metals from non-metals
- Electrical neutrality of ionic compounds
Using Charges on common ions and polyatomic ions in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Chemistry questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge