Energy Changes and Reversible Reactions
Review the essentials and check your understanding after your teacher’s explanation.
Where does the energy go?能量流向哪里？
Use temperature observations to distinguish exothermic and endothermic changes.
Complete this core task when your teacher assigns the topic. Use the short recall cards before class.按老师指定的知识点完成网页预习，周内用提示卡回忆；不是整章预习。
Choose a topic
Energy transfer and reaction pathways
Interpret and label energy changes and activation energy.
Bond energies
Calculate enthalpy changes from bonds broken and bonds formed.
Fuels and fuel cells
Compare energy sources and evaluate hydrogen–oxygen fuel cells.
Reversible reactions and equilibrium
Explain reversible changes and dynamic equilibrium.
Changing equilibrium conditions
Predict and explain the effects of changed conditions.
Industrial equilibrium
Explain the compromises used in the Haber and Contact processes.
Printable worksheets
Guided Worksheet
6 lessons with teacher examples, partner practice and hint references.
Download DOCX ↓Printable hint cards
Use a card when you need a starting step, then return to the question. Chapter 9 cards are on pages 4–6 of the collection. Print the relevant pages and cut out the cards you need.
Download hint cards DOCX ↓