Which test shows that a gas is carbon dioxide?
A burning splint placed in the gas will make a squeaky 'pop' sound.
Damp blue litmus paper placed in the gas will turn red and then bleach white.
A glowing splint will relight when placed in the gas.
The gas will turn limewater cloudy when bubbled through it.
Practise Edexcel GCSE Chemistry Acids with exam-style questions for Foundation and Higher tier. 276 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.
