Activation Energy and the Activated Complex (Grade 11 NSC Matric Physical Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is activation energy?
What is activation energy?
Min. energy needed to start a reaction
Do exothermic reactions require activation energy?
Do exothermic reactions require activation energy?
Yes, even though they release energy
What does the activated complex represent?
What does the activated complex represent?
Peak where bonds break and form
Reactants at 45 kJ, products at 10 kJ. What is ?
Reactants at 45 kJ, products at 10 kJ. What is ?
kJ
Activated complex at 103 kJ, reactants at 45 kJ. What is activation energy?
Activated complex at 103 kJ, reactants at 45 kJ. What is activation energy?
kJ
If is negative, the reaction is:
If is negative, the reaction is:
Exothermic
How long does the activated complex exist?
How long does the activated complex exist?
Very short time
Which reactions typically have larger activation energies?
Which reactions typically have larger activation energies?
Endothermic reactions
Why do energy diagrams show a curved path?
Why do energy diagrams show a curved path?
Bonds break and new bonds form
What sign does activation energy always have?
What sign does activation energy always have?
Positive