High School Science: Chapter-wise 80/20

Chemistry
1) Matter in Our Surroundings — states, diffusion, factors affecting rate; latent heat.
2) Is Matter Around Us Pure? — element/compound/mixture; separation methods (evap, distill, chromatography).
3) Atoms & Molecules — law of conservation; formula mass/mole basics; balancing light equations.
4) Structure of the Atom — e/p/n; valency; isotopes/uses; simple configurations.
 

Physics
5) Motion — v=u+atv=u+atv=u+at, graphs (s-t vs v-t); area under v-t = displacement.
6) Force & Laws of Motion — inertia types; F=ma; action–reaction in pairs.
7) Gravitation — g ≈ 9.8; free fall equations; mass vs weight; buoyancy/Archimedes.
8) Work & Energy — W=Fscos⁡θW=Fs\cos\thetaW=Fscosθ; KE/PE interconversions; P=WtP=\frac{W}{t}P=tW​.
9) Sound — speed factors; wavelength–frequency–velocity link; echo conditions; SONAR basics.
 

Biology
10) Fundamental Unit of Life — organelles & functions; plant vs animal differences.
11) Tissues — simple list: parenchyma/collenchyma/sclerenchyma; epithelial, muscle, nervous.
12) Diversity in Living Organisms — hierarchy (Kingdom→Species); features of major groups.
13) Why Do We Fall Ill? — disease types; prevention vs treatment; public health ideas.
14) Natural Resources / Improvement in Food Resources — water/air/soil cycles; crop improvement, manures vs fertilizers, pests.