1. Mohamed is learning about prevention of corrosion. He understands that painting is a common method to prevent corrosion. How does painting prevent corrosion?
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Chapter 7: Electrochemistry + Chapter 8: Energetics
Correct answer is shown on each question. Use Next to read one by one.
2. Which type of cell requires an external power source?
3. Julia is studying exothermic reactions. She knows that neutralization reactions are exothermic. What is observed when an acid reacts with a base?
4. A reducing agent is a substance that:
5. Hina is studying activation energy. She knows that activation energy is the minimum energy required for a reaction to occur. How does a catalyst affect the activation energy?
6. The cathode in a galvanic cell is:
7. Xia is studying corrosion and its prevention. She learns that corrosion can be prevented by making the metal the cathode. What is this method called?
8. George is studying bond formation and bond dissociation. He knows that energy is released when bonds are formed and energy is absorbed when bonds are broken. What is the term for the energy required to break a bond?
9. Which statement is true for exothermic reactions?
10. Ibrahim is learning about catalysts. He knows that catalysts speed up reactions without being consumed. What is the function of a catalyst?