Factors Which Affect The Rate Of Chemical Reaction Flashcards
What is the main factor that affects the rate of a chemical reaction?
Concentration of reactants.
True or False: Increasing temperature generally increases the rate of a chemical reaction.
True.
Fill in the blank: The presence of a __________ can speed up a chemical reaction without being consumed.
catalyst.
What effect does surface area have on the rate of reaction?
Increasing surface area increases the rate of reaction.
Multiple Choice: Which of the following factors does NOT affect reaction rate? A) Temperature B) Concentration C) Color D) Surface Area
C) Color.
Short Answer: How does pressure affect the rate of reaction in gaseous systems?
Increasing pressure increases the rate of reaction by reducing volume and increasing concentration.
True or False: The rate of a reaction is independent of the nature of the reactants.
False.
What is the term for the minimum energy required for a reaction to occur?
Activation energy.
Fill in the blank: The rate of reaction can be measured by observing changes in __________ over time.
concentration.
Multiple Choice: Which of the following will generally NOT increase the reaction rate? A) Higher temperature B) Increased concentration C) Decreased surface area D) Adding a catalyst
C) Decreased surface area.
Short Answer: What is a catalyst?
A substance that increases the rate of a reaction without being consumed.
True or False: All reactions require a catalyst to proceed.
False.
What role does temperature play in affecting kinetic energy of molecules?
Higher temperatures increase the kinetic energy of molecules.
Fill in the blank: The collision theory states that reactions occur when particles __________ with sufficient energy.
collide.
Multiple Choice: Which factor decreases the rate of reaction? A) Higher temperature B) Lower concentration C) Increased surface area D) Presence of a catalyst
B) Lower concentration.
Short Answer: How does agitation affect the rate of reaction?
Agitation increases the rate of reaction by enhancing mixing and contact between reactants.
What is the effect of a higher concentration of reactants on the reaction rate?
It generally increases the reaction rate.
True or False: A higher activation energy means a slower reaction rate.
True.
Fill in the blank: The nature of the __________ can significantly influence the reaction rate.
reactants.
