What is the definition of reaction rate?
Reaction Rates

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Chemistry
•
10th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The reaction rate is the speed at which reactants are converted into products in a chemical reaction, typically measured in terms of concentration change over time.
2.
FLASHCARD QUESTION
Front
How does surface area affect reaction rates?
Back
Increasing the surface area of a reactant increases the reaction rate because it allows more particles to collide and react.
3.
FLASHCARD QUESTION
Front
What is activation energy (Ea)?
Back
Activation energy is the minimum energy required for a chemical reaction to occur.
4.
FLASHCARD QUESTION
Front
How does temperature affect reaction rates?
Back
Increasing the temperature generally increases the reaction rate because particles have more kinetic energy and collide more frequently and with greater energy.
5.
FLASHCARD QUESTION
Front
What is the effect of concentration on reaction rates?
Back
Increasing the concentration of reactants typically increases the reaction rate because there are more particles available to collide.
6.
FLASHCARD QUESTION
Front
What happens to the reaction rate when pressure is increased in gaseous reactions?
Back
Increasing pressure in gaseous reactions causes the reacting particles to move closer together, which increases the frequency of collisions and thus the reaction rate.
7.
FLASHCARD QUESTION
Front
What is a catalyst?
Back
A catalyst is a substance that increases the reaction rate without being consumed in the reaction by lowering the activation energy.
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