Collision Theory and Activation Energy (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What must happen for a chemical reaction to occur according to collision theory?
What must happen for a chemical reaction to occur according to collision theory?
Particles must physically collide
Why might particles with sufficient energy still not react when they collide?
Why might particles with sufficient energy still not react when they collide?
Wrong orientation during collision
What is an effective collision?
What is an effective collision?
A collision forming products
What does the Maxwell-Boltzmann distribution show about particle energies?
What does the Maxwell-Boltzmann distribution show about particle energies?
Only a small fraction above
What is activation energy ()?
What is activation energy ()?
Minimum energy for reaction
What is the effect of a large activation energy on reaction rate?
What is the effect of a large activation energy on reaction rate?
Slow reaction rate
What is the activated complex in a reaction profile diagram?
What is the activated complex in a reaction profile diagram?
Highest energy point (transition state)
In an exothermic reaction, how does product energy compare to reactant energy?
In an exothermic reaction, how does product energy compare to reactant energy?
Products have lower energy
What is the most significant effect of increasing temperature on reaction rate?
What is the most significant effect of increasing temperature on reaction rate?
More particles above threshold
How does increasing concentration increase reaction rate?
How does increasing concentration increase reaction rate?
More frequent collisions occur
Why do smaller particles react faster than large chunks of the same material?
Why do smaller particles react faster than large chunks of the same material?
Greater surface area exposed
What is a key property of a catalyst in a chemical reaction?
What is a key property of a catalyst in a chemical reaction?
Not consumed in the reaction