What factors affect the rate of a chemical reaction and how?

Reactant concentration. Increasing the concentration of one or more reactants will often increase the rate of reaction.  Physical state of the reactants and surface area.Temperature.  Presence of a catalyst.

Explanation:

Reactant concentration. Increasing the concentration of one or more reactants will often increase the rate of reaction.Physical state of the reactants and surface area.Temperature. Presence of a catalyst.

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.