Chemical Tests for Anions-Cations and some others

i have put together some compounds, their tests and results which need to be known for AQA Physics unit 3

these include:

-Flame tests

-Sodium Hydroxide tests

-Organic compound tests

i just had my exams but hope this still helps you.

if it helps, remember them then get someone to ask you what the results are when you have a free minute. thats how i remembered all of mine.

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  • Created by: Dhruv
  • Created on: 08-06-10 19:39

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Page 1

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TESTS FOR CATIONS
COMPOUND TEST RESULT
Sodium (Na) Flame Yellow
Potassium (K) Flame Lilac
Calcium (Ca) Flame Red-brick
Copper (Cu) Flame Blue
Lithium (Li) Flame Red-crimson


TESTS FOR ANIONS
Carbon dioxide Bubble through Milky precipitate
limewater
Copper carbonate Heat strongly Black when cool
Zinc carbonate Heat strongly Yellow when cool…

Page 2

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Iron, Fe2+ ...+2OH-(...OH)2 Sludgy green
Iron, Fe3+ ...+2OH-(...OH)2 Reddish brown
Aluminum,Al3+ ...+2OH-(...OH)2 White then dissolves
Magnesium,Mg2+ ...+2OH-(...OH)2 White


OTHER ORGANIC TESTS
Ammonium Add NaOH Stinky Ammonia
compound
C=C bond Add bromine Brown turns clear
water
Organic Burned in plenty Yellow/orange/blu
compound of oxygen e flame+ Carbon
Dioxide
Organic Burned in…

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