KINETICS

Front

What is a catalyst?

Back

A substance that increases the rate of a chemical reaction by lowering the activation energy without being consumed in the reaction.

Front

How does particle size affect reaction rate?

Back

Smaller particle size increases the surface area exposed for the reaction, leading to a faster reaction rate.

Front

What happens to the reaction rate when temperature is decreased?

Back

The reaction rate decreases.

Front

What effect does increasing the concentration of a reactant have on the reaction rate?

Back

Increasing the concentration of a reactant increases the reaction rate.

Front

Define activation energy.

Back

The minimum energy required for a chemical reaction to occur.

Front

What is the role of the activated complex in a reaction?

Back

The activated complex is a temporary, unstable arrangement of atoms that forms during the transition from reactants to products.

Front

Explain the collision theory of chemical reactions.

Back

The collision theory states that for a reaction to occur, reactant particles must collide with sufficient energy and proper orientation.

Front

What is the effect of a catalyst on the activation energy of a reaction?

Back

A catalyst lowers the activation energy, making it easier for the reaction to occur.

Front

How does temperature influence the kinetic energy of particles?

Back

As temperature increases, the kinetic energy of particles increases, leading to more frequent and effective collisions.

Front

What is the relationship between surface area and reaction rate?

Back

A larger surface area allows more particles to collide, increasing the reaction rate.