Practice Summary (5.4) - Chapter 5: Surface Chemistry - ICSE 12 Chemistry

Practice: Summary

Lesson 5.4Surface Chemistry

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10 questions

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6 sample questions

Question 1.
Define adsorption in your own words.
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Think about how particles cling to a surface.
Question 2.
What is the difference between physisorption and chemisorption?
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Consider the strength of the forces at action.
3Question 3.
What is the main difference between physisorption and chemisorption?
- Physisorption has strong bonds, chemisorption weak forces
- Physisorption is reversible, chemisorption is often irreversible
- Both are irreversible
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Think about what happens when you heat or change a condition.
4Question 4.
True or False: Catalysts are consumed in the reactions they participate in.
- True
- False
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Consider what happens to a catalyst post-reaction.
Question 5.
A catalyst used in the chemical synthesis of ammonia is known to improve overall efficiency but can be poisoned by impurities. Discuss the dual role of a catalyst in industrial processes.
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Think about why industries monitor reactant purity and catalyst health.
Question 6.
How would you explain the significance of the Tyndall Effect in colloidal observations to a class of younger students?
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Use the analogy of light rays visible in a dark room. How would light showing dust relate to colloids?

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