A student performs two chemical tests on different substances to identify their properties. The results are shown in the table below.
| Test | Results | |
|---|---|---|
| Test 1 | Flame test | A yellow-green flame is produced |
| Test 2 | Hydrogen peroxide solution is added to a manganese(IV) oxide catalyst | Rapid effervescence occurs and the gas given off relights a glowing splint |
State the name of the gas given off in Test 2.
Practise Edexcel GCSE Chemistry Qualitative analysis: tests for ions with exam-style questions for Foundation and Higher tier. 127 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
