Where should I start in chemistry?

From the periodic table and valency. With those in place, bonding, reactions and calculations become far easier.

Do I have to memorise every reaction?

No. Once you can read the periodic table most reactions become predictable, and the memorising load drops sharply.

I keep mis-balancing equations — what helps?

Stop guessing and count the atoms of each element. Counting slowly becomes fast within a few weeks.

Class 9-10 Chemistry Book

বাংলায় পড়তে চাও? দেখো: নবম-দশম শ্রেণির রসায়ন বই

Almost everyone who struggles with chemistry struggles at the same point — moving on to equations without properly understanding the periodic table and valency. With that base in place, the rest of the book becomes surprisingly straightforward.

The chapters

The book opens with the idea of chemistry and laboratory safety, then states of matter, the structure of matter, the periodic table, chemical bonding, the mole concept and calculations, reactions, acid-base balance, mineral resources, chemistry for saving life and chemistry in our lives. The periodic table and bonding chapters are the foundation for all the rest.

Download the book

The science-group textbook, in Bangla and English versions.

The Bangla version and the English Version are different books — download the one matching your medium.

The periodic table is the base

The periodic table is not a list to memorise but a map — which element sits where, why it sits there, and what its position predicts about its behaviour. Learn to read that map and valency, bonding and reactions all become predictable, at which point individual reactions no longer need memorising.