Rates of Reactions

Front

What is the effect of increasing surface area on the rate of reaction?

Back

Increasing the surface area of reactants allows more particles to collide, leading to a faster reaction rate.

Front

Which factor does NOT affect the rate of reaction?

Back

Polarity does not affect the rate of reaction.

Front

How does increasing the concentration of reactants affect the rate of reaction?

Back

Increasing the concentration of reactants increases the number of particles available to collide, thus speeding up the reaction.

Front

What two factors determine if a collision between reacting particles will be effective?

Back

Energy and orientation of the colliding particles.

Front

What does the letter 'A' represent in a reaction energy diagram?

Back

The activation energy, which is the minimum energy required for a reaction to occur.

Front

Define activation energy.

Back

Activation energy is the energy barrier that must be overcome for a chemical reaction to occur.

Front

What role do catalysts play in chemical reactions?

Back

Catalysts increase the rate of reaction by lowering the activation energy without being consumed in the process.

Front

How does temperature affect the rate of reaction?

Back

Increasing temperature generally increases the rate of reaction by providing more energy to the particles, leading to more frequent and effective collisions.

Front

What is the relationship between particle size and reaction rate?

Back

Smaller particle sizes increase the surface area, leading to a higher rate of reaction.

Front

Explain the concept of collision theory.

Back

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