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10768719
Group 1 - Alkali metals
Description
a mind map of properties of group 1 on the periodic table
No tags specified
gcse chemistry
alkali metals
group 1
periodic table
chemistry
gcse
science
physics
Mind Map by
libe jarvis
, updated more than 1 year ago
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Created by
Simone Matthews
about 9 years ago
Copied by
libe jarvis
almost 7 years ago
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Resource summary
Group 1 - Alkali metals
Low density
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
React with water
Release hydrogen
e.g. Lithium + water -> Hydrogen + lithium Oxide
Form hydroxides
Hydroxides dissolve in water
Give alkali solution
OH- (Hydroxide) ions cause the solution to be alkali
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
The lower the melting/boiling point
All soft
You can cut them with a knife
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