An investigation was conducted to compare the reactivity of four metals: W, X, Y, and Z.
Equal-sized pieces of each metal were added to excess dilute hydrochloric acid at room temperature and observed for three minutes.
Table 1 shows the observations noted during the reactions for metals W, Y, and Z.
Table 1
| Metal | Observations with dilute hydrochloric acid |
|---|---|
| W | Rapid effervescence of gas. The metal completely disappears within one minute. |
| Y | Only a few bubbles of gas form very slowly. The metal appears almost completely unchanged after three minutes. |
| Z | No bubbles are observed. The metal remains completely unchanged after three minutes. |
Table 2 shows the determined order of reactivity for these four metals.
Table 2
| W | X | Y | Z |
|---|---|---|---|
| Most reactive | Least reactive |
Use the information in Table 1 and Table 2 to suggest the observations that would be made for metal X after three minutes.
Practise Edexcel GCSE Chemistry Obtaining and using metals with exam-style questions for Foundation and Higher tier. 110 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.
