Harnessing Chemical Energy: Reactions Unveiled
Harnessing Chemical Energy: Reactions Unveiled
Learning objective
Items in this lesson
Harnessing Chemical Energy: Reactions Unveiled
Learning objective
Learning Objective
At the end of the lesson, you will understand chemical energy in reactions and solve related problems.
What do you already know about chemical energy in reactions?
What is Chemical Energy?
Chemical energy is stored in bonds between atoms. It's released or absorbed during a chemical reaction.
Exothermic Reactions
Exothermic reactions release energy, usually as heat. Example: Combustion.
Endothermic Reactions
Endothermic reactions absorb energy. Example: Photosynthesis.
Interactive: Energy Diagrams
Draw and label energy diagrams for exothermic and endothermic reactions.
Solved Problem: Exothermic Reaction
Calculate the energy change for a combustion reaction. Given: reactant and product energy.
Solved Problem: Endothermic Reaction
Calculate energy absorbed in photosynthesis. Given: reactant and product energy values.
Review and Key Points
Review types of reactions and energy changes. Reinforce problem-solving strategies.
Write down 3 things you learned in this lesson.
Write down 2 things you want to know more about.
Ask 1 question about something you haven't quite understood yet.
