Which metal ions are present if the flame test colour is lilac?
Sodium ions
Potassium ions
Calcium ions
What flame test colour will be observed if Cu2+ ions are present?
Bright red
Bright yellow
Blue-green
How could you test whether a salt contains Fe2+ ions?
Add sodium hydroxide solution
Add barium chloride solution
Add dilute nitric acid
Which metal ion is present if a blue precipitate forms when sodium hydroxide solution is added?
Zn2+
Ca2+
Cu2+
What is the test for carbonate ions?
Add dilute acid and look for bubbling
Add sodium hydroxide and look for a white precipitate
Add silver nitrate and look for bubbling
What is observed if barium chloride (and hydrochloric acid) is added to sulfate ions?
A white precipitate
A blue precipitate
A green precipitate
What colour precipitate is formed when silver nitrate (and nitric acid) is added to iodide ions?
White
Cream
Yellow
A salt is tested. It gives a blue-green flame in a flame test, and bubbles appear when acid is added. What is the salt?
Calcium carbonate
Copper carbonate
Copper sulfate
If a flame test shows a bright red colour and a white precipitate is formed with acidified silver nitrate, what is the salt?
Lithium chloride
Lithium bromide
Calcium chloride
What is an advantage of instrumental analysis compared to chemical tests?
It is cheaper
It is more accurate
Equipment more readily available