C3, analysis and quantative chemistry

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  • Created by: emmajane_
  • Created on: 21-04-14 11:26
What does a a flame test identify?
metal ions
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What is step 1 of the flame test?
Dip clean loop in same sample solution
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What is step 2 of the flame test?
Hold flame test loop at edge of bunsen burner flame
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What is step 3 of the flame test?
Observe changed colour of flame and decide which metal it indicates
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What is step 4 of the flame test?
Clean loop in acid and rinse with water. Repeate steps 1-3 with a new sample
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What colour are the metal ions flame colour?: Lithium, sodium, calcium and barium?
L= crimson S= Yellow P=Lilac C=Red B= Green
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What is a precipitate?
An insoluble solid formed from reactions
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What colour precipitate do calcium, magnesium and aluminium form when reacted with sodium hydroxide?
A white precipitate
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Name the colour of the precipitate from these metals: Copper (II) Iron (II) Iron (III)
C= Blue I(II)= Green I(III)= Brown
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What is step 1 of testing for carbonate atoms?
Carbonat acids react with dilute acids to producce carbon dioxide and water
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What is step 2 of testing for carbonate atoms?
Collect gas given off and bubble it through limewater. Turns cloudy white if carbonate atoms are present. White precipitate is formed
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What is step 1 of testing for sulphate ions?
Add a few drops of dilute hydralic acid to solution
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What is step 3 of testing for sulphate ions?
Add a few drops of barium chlride to solution
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Why can't universal indicator be used for titrations?
Because it comes in a range of colours
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What should be used instead of universal indicator for titrations and why?
Phendphthalein because it turns pink if there's an alkaili present and colourless if acid is present
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What is the purpose of titrations?
To determine the amount of acid and alkali needed to neutralise a substance/mixture
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Other cards in this set

Card 2

Front

What is step 1 of the flame test?

Back

Dip clean loop in same sample solution

Card 3

Front

What is step 2 of the flame test?

Back

Preview of the front of card 3

Card 4

Front

What is step 3 of the flame test?

Back

Preview of the front of card 4

Card 5

Front

What is step 4 of the flame test?

Back

Preview of the front of card 5
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