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Cation and Anion Tests
Chemistry Unit 3 GCSE Topic on Testing for Cations and Anions
20
Chemistry
12th Grade
05/22/2011

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Cards

Term
Calcium (2+)
Definition
Brick RED
Term
Barium (2+)
Definition
Green
Term
Lithium (+)
Definition
Crimson RED
Term
Potassium (+)
Definition
Purple
Term
Sodium (2+)
Definition
Yellow/Orange
Term
Calcium (2+)
(not flame test)
Definition

ADD NAOH

COLOUR COMPOUND = white

Term
Copper (III) (2+)
Definition

ADD NAOH

COLOUR = Blue

Term
Iron (II) (2+)
Definition

ADD NAOH

COLOUR COMPOUND = Green

Term
Iron (III) (3+)
Definition

ADD NAOH

COLOUR COMPOUND = Red/Brown

Term
Aluminium (3+)
Definition

ADD NAOH

COLOUR = white then colourless

Term
Magnesium (2+)
Definition

ADD NAOH

COLOUR = white

Term
CARBONATES
Definition

Add limewater -> milky

 

dilute acid + carbonate -> salt + water + carbon dioxide

 

carbonate in testube + heat = changes colour

 

Term
Zinc Carbonate
Definition
White to Yellow (white when cooled)
Term
Copper Carbonate
Definition

Green to Black

(black when cooled)

Term
SULPHATES
Definition

Add dilute HCl

Add Barium Chloride

White precipitate forms

Term
HALIDES
Definition

Add dilute Nitric Acid

Add Silver Nitrate solution

 

Term
Chloride (-)
Definition
White precipitate
Term
Bromide (-)
Definition
Cream
Term
Iodide (-)
Definition
Yellow
Term
NITRATES
Definition

Add Aluminium Powder

Add NAOH + HEAT

Ammonia gas forms 

(red litmus paper -> blue)

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