Testing For Elements Flashcards
(25 cards)
What do you use to test the halide ions?
Dilute nitric acid and silver nitrate
What halide ion forms a white precipitate?
Chloride ions
What halide ion creates a cream precipitate?
Bromide ions
What halide ion creates a yellow precipitate?
Iodide ions
What do you use to test for carbonate ions?
Dilute acid and passing through lime water
What happens when yoy pass a carbonate through linewater?
A white precipitate (cloudy)
What do you use to test for sulphate ions?
Dilute hydrochloric acid and barium chloride salt
What happens when a sulphate ion is present?
A white precipitate is formed
What colour flame does lithium have?
Pinky red
What colour flame does sodium have?
Yellow
What colour flame does potassium have?
Lilac
What colour flame does calcium have?
Orange - red
What flame does copper have?
Blue
What happens to group 1 metals when you add sodium hydroxide?
Colourless
What happens to group 2 metals when you add sodium hydroxide?
Colourless
What happens to calcium when you add sodium hydroxide?
Colourless
What happens when magnesium is added to sodium hydroxide?
Colourless
What happens when you add aluminium to sodium hydroxide?
Colourless
What happens to copper 2 when you add sodium hydroxide?
Coloured blue
What happens when iron 2 is added to sodium hydroxide?
Coloured green
What happens when uron 3 is added to sodium hydroxide?
Coloured orange brown
What happens to magnisium in a flame test
Flame is white (colourless)
What happens to aluminium 3 in a flame test?
Silvery white flame (colourless)
What do you do to Cations?
Add sodium hydroxide and then do flame tests
