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Summary: Testing
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1 Testing
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What are flame tests used for?
Testing for metal ions -
What colour flame does lithium produce?
Crimson -
What colour flame does sodium produce?
Orange -
What colour flame does potassium produce?
Lilac -
What colour flame does calcium produce?
Red -
What colour flame does barium produce?
Green -
What colour precipitate do aluminium, calcium and magnesium solutions make when reacted with sodium hydroxide?
White -
What colour precipitate does iron(II) solution make when reacted with sodium hydroxide?
Green -
How do you test for carbonate ions?
If you react a substance with a dilute acid and it produces a precipitate since the carbon dioxide produced from the initial reaction will react with the carbonate -
How do you test for halide ions?
When you add silver nitrate to a solution, if it creates a white, cream or yellow precipitate then halide ions are present
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