Chemistry
Chemical Reactions and Equations
10 Topics Acids, Bases and Salt
7 Topics Metals and Non-Metals
16 Topics Biology
Heredity and Evolution
10 Topics Our Environment
7 Topics Physics
Light Reflection and Refraction
17 Topics The Human Eye and Colourful World
15 Topics Electricity
11 Topics Magnetic Effects of Electric Current
10 Topics 
Types of Reaction: Decomposition Reaction
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[Decomposition reaction, crystals, burning sulphur, color, oxide, lime, thermal decomposition, fumes]