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764830
PERIODIC TABLE
Descrição
CHEMISTRY
Mapa Mental por
eadaoinmckeever
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eadaoinmckeever
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PERIODIC TABLE
Groups
GROUP I - Alkali Metals
Physical properties
Grey solids
Dull on outside, shiny inside
Low melting and boiling points
Low densities --> float on water
Soft, easily cut
Chemical properties
Very reactive - stored under oil
burn on heating to form oxides
React violently with cold water
GROUP II - Alkaline Earth Metals
Physical properties
Grey solids
Dull on outside, shiny inside
Higher melting and boiling points than G1
Harder than G1 elements
More dense than water --> sink
Chemical properties
Reactive metals
Mg and Ca not stored under oil
burn on heating to form oxides
Most will react will cold water, Mg - heated with steam
GROUP VII - Halogens
Physical properties
They are coloured
Fluorine - Green gas
Chlorine - Green gas
Bromine - Orange liquid
Iodine - Black solid which sublimes to a purple gas
Melting and boiling points are low
Extremely toxic
Chemical properties
Reactivity DECREASES down the group
Reactive non- metals
React with water to form acidic solutions (eg) bleach
They undergo displacement reactions
GROUP 0 - Noble Gases
Single Atoms
Unreactive colourless gases
Full outer shell of electrons
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