Metal reacts with water - Metals & Non-Metals Video Lecture - Class 10

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what we'll do is we'll react with water
now because water is the risk on another
thing so you know that metal plus water
is nothing but metal oxide in hydrogen
that reaction we know so when do the
reaction will react this guy with water
and see what happens also metal oxide
plus water if you say you get metal
hydroxide correct so and please note all
the metals will not react with water we
know this and the reason we are using
this the hope that we may be able to
find the reactive we can arrange the
metals in the reactive order so we'll do
the activity V this activity will try to
react - cam and sodium with water and
observe that potassium and sodium reacts
violently with whole what even with cold
water when the water is cold it reacts
one here sodium in production breaks is
so violent and exude humming that it
involved hydrogen gas and catches fire
immediately you take sodium you put a
drop of water it catches fire
immediately
it is so exotic many talk about example
the equation you take potassium you take
water it gives - of hydroxide water a
hydrogen and heat energy
same thing with sodium sodium you take
water it gives sodium hydroxide hydrogen
and helium right the reaction of calcium
with water is little less boiling heat
evolved is not sufficient for hydrogen
to catch fire heat is involved but it
doesn't catch fire
so even calcium with water you get
calcium hydroxide and hydrogen gets back
means it doesn't react with cold water
it reacts only with hot water till now
this guy reacts with cold water this
very actually with hot water to form
magnesium side and hydrogen so with this
you can see that you can say that I have
my sodium potassium
is one we don't know which one is more
reactive now but calcium and magnesium
say that calcium is more reactive than -
if we can create this kind of series
because calcium reacts with cold water
magnesium react with only hot water
correct the next elements alluminium are
an engine they don't react either with
cold water and hot water but they react
with seem so aluminum iron and zinc are
now 1l minium iron n zinc but still we
are not sure which one is more reactive
but everybody am ing guy in one bucket
not right so L ammonia will give this
air 203 aluminum oxide as hydrogen gas
iron will give me three or four very
coxide in hydrogen gas elements like
lead copper silver and gold do not react
with water at all these elements are not
reacting with water at all that means we
can say that lead copper silver and
silver is the next lot correct so this
experiment with the old experiment what
we can now is tell is yeah the sodium
potassium right and then we have if you
see my calcium magnesium
I have calcium magnesium then I have
aluminum iron zinc and then I have lead
and copper
I knew that lead and copper are less
reactive than gold this between from the
oxidation thing because copper ended
oxidize the gold and silver doesn't
oxidize right so I have this series now
still I don't have the exact series
correct so let's do some thank you visit
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