Reactions
- Created by: ELLIE1114
- Created on: 08-12-17 10:03
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- Reactions
- Reaction with Oxygen
- metal+oxygen--- metal oxide
- sodium + oxygen --- sodium oxide
- metal+oxygen--- metal oxide
- oxidation reactions
- defined as a reaction where a substance gains oxygen
- Reaction with dilute acids
- only metals that are more reactive than hydrogen
- metal + acid -- metal salt + hydrogen
- potassium + hydrochloric acid --- potassium chloride + hydrogen
- What happens to a metal atom when it reacts?
- when sodium atoms react with oxygen they form positive ions
- when calcium atoms react with water they become 2 plus ions
- when zinc atoms react with hydrochloric acid they form 2 plus ions
- they greater tendency to lose or gain an electron the more reactive it is
- Displacement reactions
- reaction where a more reactive element takes the place of a less reactive element
- aluminium + iron oxide ---- aluminium oxide + iron
- used to weld railway lines together
- Reaction with Oxygen
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