Physics
Motion
16 Topics Force And Laws Of Motion
12 Topics Gravitation
21 Topics Work and Energy
13 Topics Sound
23 Topics Chemistry
Matter in Our Surroundings
10 Topics Is Matter Around Us Pure
13 Topics Biology
The Fundamental Unit Of Life
10 Topics Tissues
10 Topics Diversity in Living Organisms
7 Topics Why Do We Fall ill
10 Topics Natural Resources
10 Topics 
Matter
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[mass, occupy space, smell, crystal ,inter molecular spaces, objects, physical nature]