Chemical Changes
- Created by: iskh
- Created on: 20-02-18 18:03
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- Chemical Changes
- Ionic Reactions
- Metal and Non-Metal
- Metal mixed witha metal or non metal is an alloy
- Metal and Non-Metal
- Group 1 - Alkali Metals
- Reactivity increases as you go down
- One electron in outer shell
- Not very dense
- Metals
- Nearly empty outer shells
- Lose electrons to form positive ions
- All metals conduct electricity because they have free electrons
- Higher densities than non-metals
- Noble gases - full outer shellls
- Unreactive
- Non-metals
- Nearly full outer shells
- Gain electrons to form negative ions
- Generally don't conduct
- Group 0 - Noble Gases
- Full outer shells
- Unreactive - Stable
- Full outer shells
- Group 7 - Halogens
- Reactivity decreases as you go down
- Form metallic compounds
- Covalent Bond
- share atoms
- Non-metal and non-metal
- Halogen + Metal ? Ionic salt
- Ionic Reactions
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