AQA GCSE Chemistry - C2 and C3 15th May

if insoluble salts comes up as the 6mark question i am screwed

How long did it roughly take you guys to recap over c2 and c3??????

Less than an hour for C2.

I thought that until I sat down and learnt the process of insoluble salts and Salts from Insoluble bases in 10 minutes>

Insoluble Salts: You literally mix two appropriate solutions of an ions and a precipitate is formed. This can then be removed for many reasons such as softening hard water.

Insoluble Bases (Soluble Salts): You add the metal oxide/hydroxide into the acid until no more will form. You filter this solution to get rid of the excess metal oxide/hydroxide that didn't react. Then, evaporate the final solution to get rid of the water and you have the salt crystals.

Like half an hour for C3, not done C2 yet
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How long did it roughly take you guys to recap over c2 and c3??????

wrong

Has anyone got an easy way of learning the tests and results for positive and negative ions?

No way except just learning them, I found positive easier to learn than negative and Cgp book helps for this, for metal ions with Naoh you only need to know the 3 coloured ones and that aluminium dissolves with excess. Make sure when learning the negatives you remember which acid goes with which, dilute HCl with barium chloride for testing for sup latest and dilute Hno3 with silver bromide for testing for hallides.
Carbonates us probably the easiest with bubbling the gas produced through lime water. Sorry no other tips but just learn learn learn! Good luck

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an insoluble salt method is using litmus paper and universal indicator you idiot.. why you telling us the wrong answer prick

Litmus and Universal indicator is to work out how acidic/alkaline something is

A METHOD to make Insoluble Salts IS what I just posted, I even just grabbed my revision guide as you made me doubt myself which is now open in front of me and I got it pretty spot on.

Is this for C3 or C2?

No way except just learning them, I found positive easier to learn than negative and Cgp book helps for this, for metal ions with Naoh you only need to know the 3 coloured ones and that aluminium dissolves with excess. Make sure when learning the negatives you remember which acid goes with which, dilute HCl with barium chloride for testing for sup latest and dilute Hno3 with silver bromide for testing for hallides.
Carbonates us probably the easiest with bubbling the gas produced through lime water. Sorry no other tips but just learn learn learn! Good luck

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I'm going to do it off memory to back you up but please confirm it because Idk what you wrote and it'll help my revision mix two solutions with the ions in and filter away the liquid and wash and dry them?

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I thought that until I sat down and learnt the process of insoluble salts and Salts from Insoluble bases in 10 minutes>

Insoluble Salts: You literally mix two appropriate solutions of an ions and a precipitate is formed. This can then be removed for many reasons such as softening hard water.

Insoluble Bases (Soluble Salts): You add the metal oxide/hydroxide into the acid until no more will form. You filter this solution to get rid of the excess metal oxide/hydroxide that didn't react. Then, evaporate the final solution to get rid of the water and you have the salt crystals.

6 Mark Guesses:

C2: Electrolysis, Insoluble Salts, Rates of Reaction
C3: Titration Equations, Haber Process, Hard and Soft Water

GET REVISING GUYS! Still plenty of time for learning entire methods and cramming in facts!