Podcast
Questions and Answers
Fast-moving particles decrease the rate of reaction by allowing less energy to be available for activation energy.
Fast-moving particles decrease the rate of reaction by allowing less energy to be available for activation energy.
False (B)
A catalyst is a substance that can be used up during a chemical reaction.
A catalyst is a substance that can be used up during a chemical reaction.
False (B)
An inhibitor is a substance that speeds up reaction rates.
An inhibitor is a substance that speeds up reaction rates.
False (B)
Increasing the surface area of reactants can lead to a higher rate of reaction.
Increasing the surface area of reactants can lead to a higher rate of reaction.
Signup and view all the answers
Reactivity differences between substances have no relation to their structures.
Reactivity differences between substances have no relation to their structures.
Signup and view all the answers
The rate of a chemical reaction can be measured by the change in concentration of reactants over time.
The rate of a chemical reaction can be measured by the change in concentration of reactants over time.
Signup and view all the answers
An exothermic reaction absorbs energy from its surroundings.
An exothermic reaction absorbs energy from its surroundings.
Signup and view all the answers
Collision theory states that reactions occur when particles collide with sufficient kinetic energy.
Collision theory states that reactions occur when particles collide with sufficient kinetic energy.
Signup and view all the answers
Increasing the concentration of reactants generally slows down the rate of reaction.
Increasing the concentration of reactants generally slows down the rate of reaction.
Signup and view all the answers
The minimum amount of energy required for a reaction to occur is known as the kinetic energy.
The minimum amount of energy required for a reaction to occur is known as the kinetic energy.
Signup and view all the answers
A reaction that produces ice cubes is categorized as endothermic.
A reaction that produces ice cubes is categorized as endothermic.
Signup and view all the answers
Endothermic reactions release heat while breaking chemical bonds.
Endothermic reactions release heat while breaking chemical bonds.
Signup and view all the answers
Heating a substance decreases the kinetic energy of its particles, thus reducing the rate of reaction.
Heating a substance decreases the kinetic energy of its particles, thus reducing the rate of reaction.
Signup and view all the answers
Flashcards
Increased particle speed
Increased particle speed
Faster-moving particles collide more frequently and effectively, increasing reaction rate.
Reaction Rate
Reaction Rate
The speed at which a chemical reaction proceeds, measured by the change in concentration of reactants or products over time.
Collision Theory
Collision Theory
A model explaining reaction rates in terms of the collisions between reacting particles.
Catalyst
Catalyst
Signup and view all the flashcards
Inhibitor
Inhibitor
Signup and view all the flashcards
Effective Collision
Effective Collision
Signup and view all the flashcards
Activation Energy
Activation Energy
Signup and view all the flashcards
Surface Area
Surface Area
Signup and view all the flashcards
Reaction Rate Differences
Reaction Rate Differences
Signup and view all the flashcards
Exothermic Reaction
Exothermic Reaction
Signup and view all the flashcards
Endothermic Reaction
Endothermic Reaction
Signup and view all the flashcards
Concentration
Concentration
Signup and view all the flashcards
Temperature Effect on Reaction
Temperature Effect on Reaction
Signup and view all the flashcards
