195 videos|336 docs|190 tests
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1. What are the basic concepts of chemistry? | ![]() |
2. What is an element in chemistry? | ![]() |
3. What is a compound in chemistry? | ![]() |
4. What is the periodic table in chemistry? | ![]() |
5. What is a chemical reaction in chemistry? | ![]() |
195 videos|336 docs|190 tests
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