C4.1.5
- Created by: catherinetaylor
- Created on: 19-03-19 15:18
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- Reactivity of Elements
- Metals form positive ions in reactions.
- The easier it is for a metal to form a positive ion, the more reactive it is.
- A metal can react with water or dilute acids if it's more reactive than Hydrogen.
- Calcium reacts with water and dilute acids but Copper doesn't.
- Metals with water: Metal Hydroxide and Hydrogen Gas.
- Metals with acids: A salt and Hydrogen Gas.
- Reactions can be used to put metals in order of their reactivity.
- The more reactive the metal, the greater rate of Hydrogen production.
- More vigorous bubbling means eye protection!
- A more reactive metal can displace a less reactive metal.
- Copper is more reactive than Silver and can displace it from a Silver Nitrate solution.
- Displacement reactions are an example of Redox Reactions: Oxidation (loss), Reduction (gain)
- Some patterns of the reactivity in the Periodic Table are:
- Group 0 don't react.
- Reactive Non-Metals may form covalent compounds with each over.
- Metals may form ionic compounds with reactive non metals.
- Group 1 and 2 metals are more reactive than Transition Metals.
- They become more reactive as you go down the group.
- Group 7 non-metals become less reactive down the group.
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