Activation Energy

Front

What is Activation Energy?

Back

The minimum energy required for a chemical reaction to occur.

Front

What does a catalyst do?

Back

A catalyst speeds up a chemical reaction without being consumed in the process.

Front

How does increasing temperature affect reaction rate?

Back

Increasing temperature generally increases the reaction rate by providing more energy to the reactants.

Front

What is the activated complex?

Back

The activated complex is a temporary, unstable arrangement of atoms that forms during a reaction.

Front

What does ΔH represent in a reaction?

Back

ΔH represents the change in enthalpy, or heat content, during a reaction.

Front

What is the energy of the activated complex?

Back

The energy of the activated complex is the peak energy level that must be overcome for a reaction to proceed.

Front

What happens to reaction rate when particle size decreases?

Back

Decreasing particle size increases the reaction rate by providing a larger surface area for the reaction.

Front

What is the difference between forward and reverse reaction activation energy?

Back

The forward reaction activation energy is the energy needed to convert reactants to products, while the reverse reaction activation energy is the energy needed to convert products back to reactants.

Front

What is a reaction coordinate diagram?

Back

A reaction coordinate diagram is a graphical representation of the energy changes during a chemical reaction.

Front

What does it mean if ΔH is positive?

Back

If ΔH is positive, it means the reaction absorbs energy from the surroundings (endothermic reaction).