1. • Understand that energy is conserved.
Week 22
• Understand that energy is conserved.
• Explain that all chemical reactions are accompanied by enthalpy changes.
• Explain that enthalpy change can be exothermic or endothermic.
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2. An exothermic enthalpy change
Week 22
An exothermic enthalpy change
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3. An endothermic enthalpy change
Week 22
An endothermic enthalpy change
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4. Week 22 Self-cooling beer can © Pearson Education Ltd 2008
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5. • Describe the importance of oxidation as an exothermic process.
Week 22
• Describe the importance of oxidation as an exothermic process.
• Explain that endothermic processes require an input of heat energy.
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6. • Construct a simple enthalpy profile diagram for a reaction.
Week 22
• Construct a simple enthalpy profile diagram for a reaction.
• Explain the term activation energy using enthalpy profile diagrams.
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7. Enthalpy profile diagram for an exothermic reaction
Week 22
Enthalpy profile diagram for an exothermic reaction
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8. Enthalpy profile diagram for an endothermic reaction
Week 22
Enthalpy profile diagram for an endothermic reaction
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9. Activation energy for an exothermic reaction
Week 22
Activation energy for an exothermic reaction
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10. Activation energy for an endothermic reaction
Week 22
Activation energy for an endothermic reaction
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11. Week 22
• Define and use the terms: standard conditions; enthalpy change of reaction; enthalpy change of formation; and enthalpy change of combustion.
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