A student adds small pieces of four metals to dilute hydrochloric acid.
| Metal | Observations |
|---|---|
| W | a steady stream of bubbles |
| X | no bubbles |
| Y | a few bubbles form slowly |
| Z | rapid fizzing and the metal quickly disappears |
Which metal has the lowest tendency to form positive ions?
W
X
Y
Z
60 exam-style questions on OCR GCSE Chemistry 4.1 Predicting chemical reactions, covering 4.1.1 Properties and trends in Groups 1, 7 and 0, 4.1.2 Properties of the transition metals, 4.1.3 Reactivity predicted from position in the Periodic Table, and 4.1.4 Reactivity of metals and the reactivity series. Each one has a worked solution and a mark scheme showing where the marks go.