Reaction Rate / Collision Theory/ PE Diagrams/ deltaH

Front

What is the purpose of adding a catalyst to a chemical reaction?

Back

To provide an alternate reaction pathway with a lower activation energy.

Front

What does a potential energy diagram illustrate?

Back

It shows the potential energy of reactants and products during a chemical reaction, including activation energy.

Front

Define activation energy.

Back

The minimum energy required for a chemical reaction to occur.

Front

What is an exothermic reaction?

Back

A reaction that releases energy, resulting in products with lower potential energy than the reactants.

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy, resulting in products with higher potential energy than the reactants.

Front

How does concentration affect reaction rate?

Back

Increasing concentration generally increases reaction rate due to more frequent particle collisions.

Front

What is collision theory?

Back

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

Front

What is the relationship between temperature and reaction rate?

Back

Increasing temperature typically increases reaction rate by providing more energy to the particles.

Front

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

Back

It is a temporary, unstable arrangement of atoms that occurs during the transition from reactants to products.

Front

How does a decrease in particle size affect reaction rate?

Back

Decreasing particle size increases surface area, leading to more collisions and a faster reaction rate.