level: Reactions of metals
Questions and Answers List
level questions: Reactions of metals
| Question | Answer |
|---|---|
| What happens when a metal reacts with water? | A metal hydroxide and hydrogen are formed e.g. Sodium + water --> sodium hydroxide + hydrogen 2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g) |
| What happens when a metal reacts with a dilute acid? | a salt and hydrogen are formed e.g. Magnesium + hydrochloric acid → magnesium chloride + hydrogen Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g) |
| Describe all the metals reactions with water and dilute acid. | view image: |
| What happens when a metal reacts with a metal oxide? | This is an oxidation reaction as the metal gains oxygen and a metal oxide is formed e.g. Magnesium + oyxgen → magnesium oxide 2Mg(s) + O2(g) → 2MgO(s) |
| What is a displacement reaction? | When a more reactive metal can displace a less reactive metal from its compounds. |