Click on any of the following topics to show the questions
- Introduction to chemistry
- Simple classification of substances
- Acids, bases and combustion
- Air and combustion
- Water and hydrogen
- Structure of the atom and the periodic table
- Chemical families
- Structure and bonding
- Salts
- Effect of an electric current on substances
- Carbon and its compounds
- Gas laws
- The mole
- Organic chemistry 1
- Nitrogen and its compounds
- Sulphur and its compounds
- Chlorine and its compounds
Nitrogen and its compounds
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