Chemical Reaction Rates and Factors

What is an example of a slow chemical reaction mentioned in the video?

• Photosynthesis

• Dissolving sugar in water

• Combustion of wood

• Rusting of a train car

How can the surface area of a reactant affect the rate of a reaction?

• It changes the color of the reactants

• It decreases the reaction rate

• It has no effect on the reaction rate

• It increases the reaction rate

Which factor does NOT affect the rate of a chemical reaction?

• Concentration

• Color

• Temperature

• Pressure

What happens to the reaction rate when the concentration of reactants is increased?

• The reaction rate decreases

• The reaction stops

• The reaction rate remains the same

• The reaction rate increases

What is Beer’s Law used for in the context of chemical reactions?

• To find the color of a solution

• To determine concentration

• To calculate pressure

• To measure temperature

In the example with copper sulfate, what happens to light transmittance as concentration increases?

• It increases

• It decreases

• It remains constant

• It fluctuates randomly

Why is it important for reactants to be aligned properly in a reaction?

• To increase the pressure

• To decrease the energy required

• To change the color of the products

• To ensure a perfect reaction

What effect does increasing temperature have on the molecules in a reaction?

• Molecules decrease in size

• Molecules move slower

• Molecules move faster

• Molecules change color

How does pressure influence the rate of a chemical reaction?

• It increases the rate

• It changes the phase of reactants

• It has no effect

• It decreases the rate

What is the significance of surface area in reaction rates?

• It has no significance

• It only affects gaseous reactions

• It determines the color of the products

• It affects the speed of the reaction