Practice Exothermic Reactions (2) - Energy Changes in Reactions - IB 10 Sciences (Group 4)

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6 sample questions

Question 1.
What is an exothermic reaction?
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Think about examples like burning or respiration.
Question 2.
Name one example of an exothermic reaction.
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Consider processes that produce heat.
3Question 3.
What is an exothermic reaction?
- A. Absorbs energy
- B. Releases energy
- C. No energy change
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Think about how heat is involved.
4Question 4.
True or False: In an exothermic reaction, the products have higher energy than the reactants.
- True
- False
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Consider the energy profile diagram.
Question 5.
If a chemical reaction releases 150 kJ of energy, what is the change in enthalpy? How does this relate to the concept of exothermic reactions?
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Think about how energy changes correlate with signs in thermodynamics.
Question 6.
Explain the role of catalysts in exothermic reactions and compare their function to energy profile diagrams.
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What does this mean for how an exothermic reaction proceeds over time?

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