AQA GCSE Chemistry · 8462
Specification 4.8.3.2 · Paper 2
Revise: Metal Hydroxide TestsFor certain metal ions, these hydroxide ions form an insoluble metal hydroxide. The solid appears throughout the liquid as a precipitate.
Loading…
Loading…
Loading…
GCSE Chemistry · key term
A substance that does not dissolve, or dissolves only to a negligible extent, in a particular solvent.
Used by AQA and Edexcel
Specification 4.8.3.2 · Paper 2
Revise: Metal Hydroxide TestsFor certain metal ions, these hydroxide ions form an insoluble metal hydroxide. The solid appears throughout the liquid as a precipitate.
Specification 2.8, 3.19 · Paper 1
A substance that does not dissolve in a particular solvent.
State the property that makes your chosen technique work, not just its name: for example, sand is insoluble, so it can be filtered from water.
Apply the sodium, potassium and ammonium rule before deciding that a carbonate or hydroxide is insoluble.
For this specification, classify calcium sulfate as insoluble, even though it is slightly soluble in practice.
Create a free account to read GCSE Chemistry revision notes for your exam board and track your progress.
First ask what the components are like: is there an insoluble solid, a dissolved solid, several liquids, or several soluble substances? Then ask which component you need to recover. The same mixture may call for different techniques depending on that goal.
Does not dissolve to any significant extent in water under the conditions being considered.