Rates of chemical reactions

Front

What is the effect of increasing temperature on the rate of chemical reactions?

Back

Increasing the temperature causes the particles (atoms or molecules) of the reactants to move more quickly, leading to more frequent and energetic collisions.

Front

What happens to the rate of reaction when a seltzer tablet is ground into powder?

Back

Grinding a seltzer tablet into powder increases the rate of reaction due to increased surface area.

Front

How is the rate of reaction defined?

Back

The rate of reaction is defined as the time it takes for a reaction to occur.

Front

What is surface area in the context of chemical reactions?

Back

Surface area is the measure of how much area of an object is exposed, which can affect the rate of reaction.

Front

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

Back

Products will form faster if the concentration of the reactants is increased.

Front

What is a catalyst?

Back

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

Front

What is collision theory?

Back

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

Front

How does particle size affect the rate of reaction?

Back

Smaller particle sizes increase the surface area, leading to more collisions and a faster rate of reaction.

Front

What role does temperature play in collision theory?

Back

Higher temperatures increase the energy of particles, resulting in more frequent and energetic collisions.

Front

What is the relationship between surface area and reaction rate?

Back

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