What is a paradigm? a. a single assertion that must be tested through observation and experimentation b. a set of procedures used to validate experimental results c. a commonly accepted set of scientific ideas and assumptions d. an untested scientific theory

option C.

A commonly accepted set of scientific ideas or assumptions.

Explanation:

A paradigm is a set of ideas or assumptions, thought patterns or concept that scientist use to describe a legitimate field. The purpose is to provide the audience with illustrations about some occurrences which will help to guide them.

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.

1) a

2)c

3)a

4)c

5)b

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