Factors Affecting the Rate of Chemical Reactions

Vocabulary flashcards reviewing the factors affecting chemical reaction rates, including temperature, concentration, surface area, Kinetic Molecular Theory, and Collision Theory.

Kinetic Molecular Theory (KMT)

A theory stating that particles move faster when temperature increases.

Collision Theory

A theory stating that chemical reactions occur when particles collide effectively, and a greater number of effective collisions leads to a faster reaction rate.

Temperature Effect on Reaction Rate

Higher temperatures cause particles to move faster, leading to more frequent collisions with greater energy, which increases the reaction rate.

Refrigeration

A method of lowering temperature to slow particle movement, reduce collision frequency and energy, and decrease the rate of spoilage reactions.

Concentration Effect on Reaction Rate

Increasing reactant particles in a given space places them closer together, increasing collision frequency and effective collisions in a shorter period of time.

Lower Concentration

A condition with fewer particles present, which reduces the chances of collisions and slows down the reaction rate.

Surface Area Effect on Reaction Rate

Exposing more particles by breaking a substance into smaller pieces or powdering it increases contact area with other reactants, allowing more frequent collisions.

Effective Collisions

Particle collisions that result in a chemical reaction; increasing their number or frequency causes reactions to occur faster.

Food Deterioration

The decay of perishable goods caused by higher temperatures speeding up spoilage reactions and bacterial growth.