Question

1. a scientist alters the concentration and surface area of a chemical compound in an experiment, these are both likely to: a. decrease rate of reaction b. be known as the responding variables c. increase the rate of reaction d. be known as the controlled variables

Explanation:

In a chemical experiment, changing concentration and surface - area of a chemical compound typically affects the rate of reaction. Higher concentration and larger surface - area usually increase the frequency of collisions between reactant particles, thus increasing the reaction rate.

Answer:

c. increase the rate of reaction