Which component is affected when a catalyst is added to a chemical reaction?
a.) the amount of substrate
b.) the activation energy
c.)
d.) the concentration of reactants

The correct answer is option B.) "the activation energy".

Explanation:

In chemistry, a catalyst is defined as a substance that accelerates a chemical reaction without being consumed in the reaction. Catalysts affect the activation of energy of the reaction by lowering it. This happens because catalysts open new pathways of reaction that require less energy, therefore the alternative routes need lowered activation energy for the reaction to start.

the dark variety, as they are not visible on the dark tree barks

explanation:

question: which statement best describes the different properties of metals?

answer: they are shiny and bend without breaking.

since metals have certain characteristics properties, they include the following: they are ductile, malleable, shiny, hard, lustrous, flexible and they are good conductor of heat and electricity. so therefore, metals are not dull and they are not non-flexible as listed. instead, they are shiny and flexible.

hope this , have a good day. c;