Teastind for gasses Flashcards
What is the method foe the hydrogen teats
1) add a small amount of aci to a tease tube
2) add a seal strip of magnesium
3) trap gas with thumb
4) teats with a lighted splint
What is the result for the hydrogen test
bruns with a pop
What is the method for carbon dioxide
1) add a small amount of acid to the test tube
2) add a small amount of calcium carbonate
3) bubbles the gas through a delivery tube into limewater
4) note any observations
What is the realt for the test for carbon dioxide
lime water ( turns colourless to milky )
What is the method for the oxygen test
1) all a small amount of volume of hydrogen peroxide to test tube into limewater
2) add a small amount of potassium iodide
3) collect the gas
4) light a spilt ueseing a bunsen burner then blow it out to make a glowing spilt
What is the resat for the test for oxygen
relight a glowing spilt
What is the method for flame test
1) dip the clean nitcrome wire into the concentrated Hcl again then dip it in to the unknown solid ( a small amount should stick to the wire )
2) place the wire into the blue Bunsen flame
3) observer the colour of the flame
What Colour will sodium change in the flame test
yellow
What colour will potassium change in the flame test
lilac
What colour will lithium change in the flame test
crimson
What colour will calcium change in the flame test
red
What colour will copper change into the flame test
blue - green
