2671604
Description
Mind Map by Simone Matthews, updated more than 1 year ago
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Created by Simone Matthews
over 9 years ago
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Group 1 -
Alkali metals
- Low density
- Float in water
- Float in water
- React with other
non-metals
- Form ionic compounds
- Has 1 electron in outershell
- Needs to lose one electron
- Ion has +1 charge
- Ion has +1 charge
- Needs to lose one electron
- Has 1 electron in outershell
- Form ionic compounds
- React with water
- Release hydrogen
- e.g. Lithium + water -> Hydrogen + lithium Oxide
- Release hydrogen
- Form hydroxides
- Hydroxides dissolve in water
- Give alkali solution
- OH- (Hydroxide) ions cause the solution to be alkali
- OH- (Hydroxide) ions cause the solution to be alkali
- Give alkali solution
- Hydroxides dissolve in water
- Further down the group you go
- The more reactive the element
- Bigger atom = electron is further from nucleus
- electrostatic forces between the nucleus and last electron are weaker
- shells create a shielding effect, reduces the positivity of the nucleus = more reactive
- So outer shell more easily lost
- So outer shell more easily lost
- shells create a shielding effect, reduces the positivity of the nucleus = more reactive
- electrostatic forces between the nucleus and last electron are weaker
- Bigger atom = electron is further from nucleus
- The lower the melting/boiling point
- The more reactive the element
- All soft
- You can cut them with a knife
- You can cut them with a knife
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