Question

how can we know whether a reaction will be exothermic or endothermic decomposition reaction, combination reaction Oxidation reaction ,or any type of reaction

Answer 1

Hi guys ☺,
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(this answer helps me to forget you Ayushi)
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Here is your answer,
The answers is in Attachment.
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(ignore my grammatical mistakes...)
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Answer 2

if the reaction releases heat it is called exothermic reaction
if the reaction absorbs heat then it is called endothermic reaction
if two reactants combine together to form simple single product then it is called combination reaction
if a reactant break down into two or more than products then it is called decomposition reaction
the adding of oxyoen or removal of hydrogen in a reaction it is called oxidation reaction
adding of hydrogen or removal of oxygen in a reaction is called reduction
if oxidation and reduction takes place in a reaction it is called redox reaction
in displacement reaction, more reactive metal displaces least reactive metal in a reaction
in double displacement reaction, exchange of ions takes place

hope it helps:)