6. Copper reacts with Sodium hydroxide solution to form copper hydroxide, a ______ precipitate.
blue
yellow
white
brown
green
7. In EXCESS sodium hydroxide, which metal hydroxide is in fact soluble?
aluminium
iron (Fe2+)
calcium
magnesium
iron (Fe3+)
8. To identify sulfate ions, you add....
Barium chloride and aluminium powder
Sodium hydroxide and aluminium powder
Barium chloride and hydrochloric acid
Sodium hydroxide and hydrochloric acid
9. After adding the correct substances to a solution containing sulfate ions, what would be the positive result indicating sulfate ions are present?
a low pH on the pH scale
a solid white precipitate
a black precipitate
Will turn damp red litmus paper blue
10. To identify nitrate ions, you add...
Barium chloride and hydrochloric acid
Sodium hydroxide and hydrochloric acid
Sodium hydroxide and aluminium powder
Barium chloride and aluminium powder
11. After adding the correct substances to a solution containing nitrate ions, what would be the positive result indicating nitrate ions are present?
a black precipitate
a low pH on the pH scale
Will turn damp red litmus paper blue
a solid white precipitate
12. The test for a carbonate is to add 1_____ and the positive result will produce 2_____ which will turn 3________ milky.
1strong alkali 2carbon dioxide 3limewater
1dilute alkali 2oxygen 3lemon watee
1dilute acid 2carbon dioxide 3limewater
1strong acid 2methane 3bromine water
13. Bromine water can detect if an organic compound with unsaturated double carbon bonds is present
True
False
14. If C=C bonds are present, bromine water will...
form a precipitate
stay the same colour
go colourless
go cloudy
go orange
15. What is the test for identifying halides(chlorine, bromine and iodine)?
Add a yellow t-shirt, stir in some eyeballs and simmer for 3 minutes
Add carbonic acid and silver carbonide
Add hydrochloric acid and silver chloride
Add nitric acid and silver nitrate
Add citric acid and silver citrate
16. (last one i promise!) After adding the correct substances to a solution containing halides what would be the positive result indicating 1chloride 2bromide and 3Iodide ions are present?
1sunset orange 2universe indigo 3the colour of love
