periodic table Flashcards
period
rows
group
column
metals
on the left of the zigzag
metals electrical conductitity
conduct electriicty because they allow charge to pass through them easily
metals acid-base character of oxides
metal oxides are basic, this means they will neutralise acids
those which dissolve will form solutions with a PH more than 7
non metals
the elements on the right of the zig zag
non metals electircal conducitity
poor conductors of electricity
non metals acid- base character of oxides
they are acidic, they dissolve in water to form solutions with a PH less than 7
noble gases
group 0
they are inert (don’t react with much at all)
the reason of this is because they have a full outer shell of electrons and the are not desperate to give up or gain electrons.
why do elements in the same group have similar chemical properties
because they have the same number of electrons in their outer shell
the properties of elements..
such as reactivity often gradually change as you go down a group
reaction to find out if it is a group one element
when lihium, sodium and potassium are put in water, they all react vigorously
this reaction produces a metal hydroxide solution. This solution is alkaline
the reaction of the alkali metals with water also produces hydrogen, this is why you can see fizzing.
group one metals are also called
alkali metals
group one reactivity
the elements in group 1 get more reactive as the atomic number increases
lithim, sodium, potassium
group seven
halogens
