Ionic equations: aqueous ion tests
I can write balanced ionic equations for the identification of cations and anions in aqueous solutions.
Ionic equations: aqueous ion tests
I can write balanced ionic equations for the identification of cations and anions in aqueous solutions.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- An ionic equation represents the reaction between positive and negative ions.
- The electric charge on each side of an ionic equation adds up to zero.
- (s), (l), (g) and (aq) in ionic equations identify the state of each substance as solid, liquid, gas or in solution
Keywords
Ion - A charged particle formed when an atom or molecule gains or loses electrons.
Ionic equation - An equation that shows only the ions and molecules directly involved in a chemical reaction, excluding spectator ions.
Spectator ion - An ion that remains unchanged during a chemical reaction and does not participate in the formation of the product.
Chemical species - Any chemical entity, such as atoms, ions, or molecules involved in a chemical process.
False positive - An incorrect test result indicating the presence of a substance or condition that is actually absent.
Common misconception
All ionic compounds dissociate completely in aqueous solutions.
Not all ionic compounds dissociate completely in water; some may not dissolve at all. It's important to know the solubility rules to correctly predict the behaviour of compounds in solution.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Lesson video
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