C4.2 Identifying the products of chemical reactions Flashcards
What is the colour of hydroxide precipitate when hydroxide solution reacts with a solution containing the metal ion iron(II)?
Green
What is the flame test colour for the metal ion copper?
Green-blue
How do you detect hydrogen?
If you lights splint near the container containing hydrogen, you would hear a squeaky pop sound
What is the colour of silver halide precipitate when the halide is iodide ions?
Yellow
What is the colour of hydroxide precipitate when hydroxide solution reacts with a solution containing the metal ion iron(III)?
Brown
How do you detect carbon dioxide?
Using limewater
Limewater is calcium hydroxide solution
Limewater turns cloudy white carbon dioxide is present. The change is cause by the calcium hydroxide reacting with carbon dioxide to form water and a white precipitate of calcium carbonate.
What is the flame test colour for the metal ion lithium?
(Crimson) Red
What is the colour of hydroxide precipitate when hydroxide solution reacts with a solution containing the metal ion zinc?
White
What is the colour of hydroxide precipitate when hydroxide solution reacts with a solution containing the metal ion copper?
Blue
What is the flame test colour for the metal ion potassium?
Lilac
What is the colour of silver halide precipitate when the halide is bromide ions?
Cream
How do you detect chlorine?
Chlorine dissolves in water to form an acidic solution.
Use a drop of tap water to dampen a piece of blue litmus paper.
Hold the paper near to a container that holds the substance
If chlorine is present the paper turns white.
How do you detect oxygen?
A glowing splint would relight
What is the flame test colour for the metal ion sodium?
Yellow
What is the flame test colour for the metal ion calcium?
Orange-red
