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To help you learn about a specific subject, our editors suggest the following research and essay topics. For each topic we have provided a list of articles to start you on your research.

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Chemistry

What are catalysts and how are they used in chemical reactions? (Beginner)
   - Catalysis
   - Heterogeneous catalysis
   - Homogeneous catalysis
   - Phase-transfer catalysis

What are some of the mechanisms postulated for ozone depletion in the upper atmosphere (stratosphere)? (Intermediate)
   - Atmospheric chemistry
   - Ozone
   - Stratosphere
   - Stratospheric ozone

What is acid rain and what are some of the reactions that produce it? (Intermediate)
   - Acid rain
   - Smog
   - Sulfuric acid

What is the difference between an acid and a base? (Intermediate)
   - Acid and base
   - Acid-base indicator
   - Base (chemistry)
   - Buffers (chemistry)

Discuss some of the most common analytical techniques in archeological chemistry and how they are used. (Advanced)
   - Analytical chemistry
   - Archeological chemical techniques
   - Archeological chemistry
   - Archeology
   - Art conservation chemistry
   - Charge-transfer-device detectors
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