Question 1: Which of the following increases the rate of reaction?

Answer: Increasing temperature

Question 2: The speed of a reaction is also known as the:

Answer: Rate of reaction

Question 3: True or False: A catalyst is used up in a reaction.

Answer: False

Question 4: True or False: Increasing the surface area of a reactant speeds up the reaction.

Answer: True

Question 5: Explain how temperature affects the rate of a chemical reaction.

Answer: Increasing temperature provides reactant particles with more energy, leading to more frequent and energetic collisions.

Question 6: What is the role of a catalyst in a chemical reaction?

Answer: A catalyst speeds up a chemical reaction without being consumed by lowering the activation energy.

Question 7: Describe the effect of concentration on the rate of reaction.

Answer: Increasing the concentration of reactants increases the rate of reaction as there are more particles available to react.

Question 8: Calculate the rate of reaction using the formula: Rate = Amount of reactant used / Time taken. If 10g of reactant A is used up in 5 minutes, what is the rate?

Answer: 2 g/min

Question 9: Match the following terms to their definitions:

Answer: See full answer key

Question 10: Order the steps in which a reaction rate increases:

Answer: See full answer key

Question 11: Fill in the blank: The ________ of a reaction is affected by temperature, concentration, surface area, and the presence of a catalyst.

Answer: rate

Question 12: Discuss how different factors such as temperature, concentration, and the use of a catalyst influence the rate of chemical reactions. Provide examples.

Answer: Temperature increases kinetic energy, concentration increases particle frequency, and catalysts lower activation energy. For example, increasing temperature speeds up the reaction of baking soda and vinegar.