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Yr 9 gases

N Cordell

Gas tests

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Across
2.Type of reaction where hydrogen reacts with oxygen
7.This gas bleaches litmus paper
8.This is made when carbon dioxide is bubbled through limewater to make it turn cloudy
9.The catalyst needed to break down hydrogen peroxide
11.______________ + acid makes a salt + hydrogen gas
14.Made when hydrogen peroxide breaks down
15.End of the name of salts made with nitric acid
16.Tested with a glowing splint which it relights
17.End of the name of salts made with sulfuric acid
Down
1.Tested with a lit splint which then goes 'pop'
2.This is made when excess carbon dioxide is added to limewater- it is soluble
3.Sodium ______________needs to be added to hydrochloric acid to make carbon dioxide
4.Has the formula H2O2
5.A positive result when using bromine water to test for a key functional group
6.Name of the salt made with zinc and hydrochloric acid
7.Chemical name for limewater
10.Tested for with bromine water
12.Used to test for carbon dioxide gas
13.Anhydrous copper sulfate is used to test for the presence of this substance.

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