Add dilute acid, then test for carbon dioxide gas effervescence. Carbon dioxide produced
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Check
Okay!
Check
lifesaver
Give 15 points!
Oops!
star
Double points!
Okay!
shark
Other team loses 25 points!
Okay!
banana
Go to last place!
Oops!
15
What is the effect of adding NaOH solution to the zinc ion?
white ppt., soluble in excess, giving a colourless solution
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Check
10
What is the test for carbon dioxide?
turns limewater milky/cloudy
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Check
banana
Go to last place!
Oops!
star
Double points!
Okay!
fairy
Take points!
5
10
15
20
25
baam
Lose 25 points!
Oops!
10
What is the test for ammonia?
turns damp red litmus paper blue
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Check
15
What is the effect of adding aqueous ammonia to the chromium (III) ion?
green ppt., insoluble in excess
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Check
15
What is the effect of adding aqueous ammonia to the zinc ion?
white ppt., soluble in excess, giving a
colourless solution
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Check
Okay!
Check
boom
Lose 50 points!
Oops!
star
Double points!
Okay!
fairy
Take points!
5
10
15
20
25
baam
Lose 10 points!
Oops!
banana
Go to last place!
Oops!
seesaw
Swap points!
Okay!
gift
Win 5 points!
Okay!
lifesaver
Give 20 points!
Oops!
15
What is the effect of adding aqueous ammonia to the aluminium ion?
white ppt., insoluble in excess
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Check
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Check
15
What is the effect of adding NaOH solution to the copper(II) ion?
light blue ppt., insoluble in excess
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Check
15
What is the test and result for bromides?
acidified silver nitrate, cream ppt.
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Check
15
What is the effect of adding NaOH solution to the chromium(III) ion?
green ppt., soluble in excess
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Check
Okay!
Check
15
What is the test and result for sulfites?
Add a small volume of acidified aqueous potassium manganate(VII). The acidified aqueous potassium manganate (VII) changes colour from purple to colourless
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15
What is the effect of adding aqueous ammonia to the calcium ion?
