Factors Affecting Reaction Rates

The video tutorial demonstrates an experiment to understand the effect of particle size on the rate of reaction. The teacher uses Panadol tablets, one whole and one pulverized, to show how surface area impacts reaction speed. The pulverized tablet dissolves faster due to increased surface area, illustrating that smaller particle sizes lead to higher reaction rates. The video concludes with a summary of the findings and thanks the viewers.

What are the four factors that affect the rate of reaction?

• Temperature, pressure, catalyst, and volume

• Concentration, pressure, volume, and surface area

• Pressure, volume, temperature, and catalyst

• Temperature, concentration, catalyst, and particle size

Which factor is being focused on in this experiment?

• Particle size

• Catalyst

• Concentration

• Temperature

What materials are used in the experiment?

• Two aspirin tablets and one glass of water

• Two aspirin tablets and two glasses of water

• Two Panadol tablets and two glasses of water

• One Panadol tablet and one glass of water

What is done to one of the Panadol tablets before the experiment?

• It is dissolved in water

• It is heated

• It is cooled

• It is pulverized

Why does the pulverized tablet dissolve faster than the whole tablet?

• It is less dense

• It is more reactive

• It has a larger surface area

• It has a smaller surface area

What happens to the surface area when the particle size is decreased?

• The surface area remains the same

• The surface area increases

• The surface area decreases

• The surface area becomes zero

How does an increase in surface area affect the frequency of collisions between particles?

• It increases the frequency

• It has no effect

• It makes the frequency zero

• It decreases the frequency

What is the relationship between surface area and the rate of reaction?

• Larger surface area decreases the rate

• Surface area has no effect on the rate

• Smaller surface area increases the rate

• Larger surface area increases the rate

What is the main conclusion of the experiment?

• Concentration affects the rate the most

• Temperature is the most important factor

• Catalyst is the key factor in reactions

• Particle size significantly affects the rate of reaction

What is the effect of increasing the frequency of collisions between particles?

• It stops the reaction

• It has no effect on the rate of reaction

• It increases the rate of reaction

• It decreases the rate of reaction