During a metal-identification check, a small piece of lithium is placed on cold water.
Which observation is expected?
Hydrogen forms only very slowly.
Hydrogen forms with steady fizzing.
Hydrogen catches fire during the reaction.
No hydrogen forms visibly.
113 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.