L7 : Synthesis reaction - Chemical Reaction, Science, Class 10 Video Lecture - Class 12

hello frames this video on chemical
reaction and equations part 7 is brought
to you by example a calm no more fear
from exam before watching this video
please make sure that you have watched
part 1 part 6
even though of exercise for that lets
the type of chemical reactions actually
so this is a five type of chemical
reaction the forces combination reaction
decomposition reaction displacement
reaction the point displacement reaction
and combustion reaction there five kind
of chemical reactions we have there are
other types also but they fall in this
type example I'll tell you typically any
chemical equation you can see by looking
at the equation you can see that this is
one of the time correct but there are
the type of chemical reactions also that
is these are the property redox reaction
is whether oxidation is going on and
action is going on we will explain this
issued base reaction that is whether the
reaction is between a single base a
student metal reaction exothermic
endothermic that is where the reaction
is giving out eat or we have to provide
heat for the reaction does imputation
reaction whether you get precipitations
from that reaction catalysis reaction
with carbon is required on by chemical
reactions organic chemistry reactions
photochemical reactions solid state
reactions Khorasan reaction time to
issue reaction this only reactions type
but all of these reactions type will
fall into that five reactions which are
explained right so we'll go through all
this kind of reactions you see that all
these reactions right red ox reactions
it can be exotic rocks reactions it can
be any of these in displacement or
combination the five the five basic
types which we talked about in the
previous slide these reactions can be
any of those reactions so basically I am
trying to say that you given any
chemical equation given given chemical
reaction it has to be one of those five
types which we have discussed in the
previous slides so let's discuss those
five types the first is the combination
reaction the combination reaction before
I even I go for the combination reaction
let me go to the analogy of combination
reactions so the general form of
combination reaction is you have to
chemical a and B it combines to form
chemical Evy and there may be some thing
required for example heat is require
something external thing is required
right extra addition but their logic is
you have two chemicals that combines or
synthesize to form a B so the analyst is
there's one guy there's another guy
there two guys you can say a and B now
they both like chemistry subject and if
you see that they become best buddy so
this is one compound so there was talk
about a and B they were two students a
and B and they become one one one
identity others they became best buddies
right so there was one compound a one
cup on B you see and they became best
buddies because of the chemistry subset
right so if you see there were two
things and that the game one thing that
is the example of synthesis or
combination reaction sometimes you need
external factor of example chemistry
subject is more excellent factor we have
that made these guys best buddies
sometimes even that is not required they
just become so in the form of chemistry
again we'll touch upon this definition
of the same reaction combination of
chemical reaction we'll see this concept
from the chemistry Alliance lens so we
have two elements that becomes combines
two comes a B so this the description is
two chemical species combined to become
a single compound I see you have two
chemical species to become a single
component that is a example of a
combination reaction example you have a
quick line and you add water to it it
becomes shake light so if you see there
are two elements here one other quick
Lyman on the water it combined to become
a shake line that is C o was my quick
line is the solid you give what
become zero H 2 plus a cross and if you
see this guy gives heat also right it
gives heat so this is an exothermic
reaction so this is one of the reaction
we shall learn now then after some time
very slight but what I'm trying to say
is that this reaction is also on a type
of reaction also of example this this
chemical reaction this sentence or
combination reaction can be the reaction
also so we have hydrogen plus oxygen you
combine these two molecules you get
water so hydrogen gas oxygen gas you
combine the system did water so you have
do products you get one product so we
have sodium and chlorine UI these two
you get sodium chlorides we have sodium
and chlorine one or saudi must fault
we must gas you get any CN that is in
solid so you have magnesium and oxygen
you are these two you get magnesium
oxide this we have done actually so you
heat this so you have this magnesium
ribbon you heat this in business the Box
unique advantage to oxide this is also
one combination reaction we have be able
you have to elevates you combine
together single element you have carbon
monoxide and you have oxygen you gain or
heat this guy right so you get carbon
dioxide so that's again the combination
reaction because you have two product
and you've got a single product as an
output so one more example you have
sulfur dioxide in oxygen you get you
combine these two you get sulphur dye
action not so you get so3 there is a gas
so these are example of a chemical
reaction which are combination chemical
reactions or synthesis chemical reaction
the point here is that in all these
reactions we have two products you get
one cuts out we have two product one
product you get on but you have two
inputs you get further so the the
reacting past has two items and the
third path is one light that's example
of synthesis giving you rare so let's do
an activity for that so what I can do is
we can take some amount of calcium oxide
or quick lying in a beaker this is
weaker and we have taken some lime in
this slowly add some water to it let's
add some water you see I'd the
think or dissolve say gardna's all right
if you see the moment we are water they
got the sod in aw let's touch that we
came and what you will notice that it's
hot this is hot so what will happened
here so we have the COA see over the
line we have to climb on this vr water
this game a quest solution is a quest
for action actually with the CEO and it
gave heat also so if you see two items
became one item right and this is my
example of my synthesis chemical
reaction correct so we have two inputs a
and B it gives you neon to come one foot
thank you
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