IG Chem – Energy Level Diagram

IG Chem – Energy Level Diagram

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Question 1 of 15

1. Question
1 point(s)
In exothermic reactions, energy is transferred from the surroundings to the system.
- true
- false
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Question 2 of 15

2. Question
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Photosynthesis is an example of an exothermic reaction.
- true
- false
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Question 3 of 15

3. Question
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The formation of nitrogen oxide from nitrogen and oxygen is an endothermic reaction.
- true
- false
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Question 4 of 15

4. Question
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Combustion reactions are typically exothermic.
- true
- false
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Question 5 of 15

5. Question
1 point(s)
The temperature of the surroundings decreases during an exothermic reaction.
- true
- false
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Question 6 of 15

6. Question
1 point(s)
In an endothermic reaction, the energy content of the products is higher than that of the reactants.
- true
- false
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Question 7 of 15

7. Question
1 point(s)
The symbol ΔH represents the enthalpy change of a reaction.
- true
- false
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Question 8 of 15

8. Question
1 point(s)
In an exothermic reaction, ΔH is positive.
- true
- false
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Question 9 of 15

9. Question
1 point(s)
Endothermic reactions can be identified by a decrease in temperature of the reaction mixture.
- true
- false
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Question 10 of 15

10. Question
1 point(s)
Bond formation releases energy, making it an exothermic process.
- true
- false
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Question 11 of 15

11. Question
1 point(s)
Breaking bonds in reactants requires energy, making it an endothermic process.
- true
- false
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Question 12 of 15

12. Question
1 point(s)
The combustion of propane has a ΔH value of -2202 kJ/mol, indicating it is an endothermic reaction.
- true
- false
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Question 13 of 15

13. Question
1 point(s)
Larger alkane molecules release more energy on combustion due to the formation of more bonds in the second stage.
- true
- false
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Question 14 of 15

14. Question
1 point(s)
The enthalpy change of combustion for hexane is higher than that for methane.
- true
- false
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Question 15 of 15

15. Question
1 point(s)
In an exothermic reaction, the energy released on forming new bonds is less than that needed to break the old bonds.
- true
- false
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