Question

How do you know when a reaction has or is:
has a catalyst
has an inhibitor
is two or more molecule reaction
is exothermic or endothermic

Answer 1

first to u can check by knowing the speed or rate of reaction
last one u can determine by measuring heat of the reaction
and third one u can know by measuring the molecularity of the reaction

Answer 2

When a reaction has a catalyst, its speed or rate of reaction would be increased.
When a reaction has an inhibitor,its speed or rate of reaction would be decreased.
when a reaction is exothermic chemical reaction releases energy in the form of light or heat
when a reaction is endothermic chemical reaction absorbs energy in the form of light or heat