An analyst has three unlabeled jars containing different solids: Solid X, Solid Y, and Solid Z.
The solids are known to be zinc powder, copper(II) carbonate, and magnesium oxide, but the jars are not labeled.
The analyst reacts a sample of each solid with dilute sulfuric acid.
| Reaction with dilute sulfuric acid | Gas bubbled through limewater | Gas tested with a lit splint | |
|---|---|---|---|
| Solid X | Green solid dissolves, blue solution formed, bubbles seen | Limewater turns cloudy | Puts out lit splint |
| Solid Y | Grey solid dissolves, colourless solution formed, bubbles seen | No change | Squeaky pop |
| Solid Z | White solid dissolves, colourless solution formed, no bubbles | No gas produced | No gas produced |
Use the observations and results in Table 1 to identify each solid. Your answer should include:
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.
