IG Chemistry-8 Rates of reaction (8.1)

Front

What is the rate of reaction?

Back

The rate of reaction is the speed at which reactants are converted into products in a chemical reaction.

Front

What factors affect the rate of reaction?

Back

Factors include concentration of reactants, temperature, surface area, and the presence of a catalyst.

Front

Define catalyst.

Back

A catalyst is a substance that increases the rate of a reaction without being consumed in the process.

Front

How does increasing concentration affect the rate of reaction?

Back

Increasing concentration generally increases the rate of reaction because there are more reactant particles available to collide.

Front

What is the effect of temperature on the rate of reaction?

Back

Increasing temperature typically increases the rate of reaction as particles move faster and collide more often.

Front

Explain the role of surface area in reaction rates.

Back

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

Front

What is the slowest rate of reaction among different forms of magnesium in HCl?

Back

Magnesium ribbon in 0.5M HCl at 10 degrees has the slowest rate of reaction.

Front

What happens when a catalyst is added to a reaction?

Back

The catalyst lowers the activation energy required for the reaction, speeding up the process.

Front

What is activation energy?

Back

Activation energy is the minimum energy required for a chemical reaction to occur.

Front

How does particle size affect reaction rates?

Back

Smaller particle sizes increase the rate of reaction due to a larger surface area for collisions.