Why must a test for an ion be unique?
So that the test gives an easily observed result which is specific to the ion that is present
How would you carry out a flame test to test for ions?
Clean a nichrome wire using hydrochloride acid, turn the Bunsen burner onto the blue flame, dip the wire into the solution of the substance to be tested, place the wire in the flame and observe a colour
What is the flame test result for lithium ions?
Red
What is the flame test result for sodium ions?
Yellow
What is the flame test result for potassium ions?
Lilac
What is the flame test result for calcium ions?
Orange-red
What is the flame test result for copper ions?
Blue-green