Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry Handwritten Notes PDF

These class 11 chemistry handwritten notes chapter 1 Some Basic Concepts of Chemistry have been carefully prepared for quick one-shot revision before Boards, JEE Main, JEE Advanced, NEET and CUET in 2026-27. The neat, colour-coded pages carry every mole formula, atomic-mass value and stoichiometry step you need for a last, fast recap.

Chapter 1 lays the numerical foundation that every later Class 11 Chemistry chapter depends on, so these handwritten pages keep every rule in one place.

• Hand-drawn boxes for the mole concept, Avogadro number and molar mass, with worked units.
• Boxed rules for stoichiometry, concentration terms and empirical formula in exam-ready form.
• Pairs with the NCERT Solutions, Notes and Formula Sheet linked lower on this page.

What the Some Basic Concepts of Chemistry Handwritten Notes Cover

The notes open with the laws of chemical combination and build up to mole-based stoichiometry, in the same order as the NCERT chapter. Every topic sits on its own handwritten page, so students can revise one idea at a time. New sub-topics are written in red, and key terms are boxed for fast recall. Because the mole concept threads through the whole of Class 11 and 12 Chemistry, these pages are worth revising more than once.

• Laws of chemical combination: conservation of mass, definite and multiple proportions.
• Atomic and molecular mass: average atomic mass, molecular and formula mass.
• Mole concept: Avogadro number, molar mass and mole-to-particle conversions.
• Stoichiometry: limiting reagent and mass-mass, mass-volume calculations.
• Concentration terms: molarity, molality, mole fraction and mass percent.
• Empirical and molecular formula from percentage composition.

Because these class 11 chemistry handwritten notes chapter 1 Some Basic Concepts of Chemistry follow the 2026-27 NCERT exactly, students can revise straight from them without cross-checking the textbook.

Key Formulas and Diagrams in the Some Basic Concepts of Chemistry Notes

The formula boxes are the heart of these pages. Each one is drawn by hand with the meaning written beside it, so a student sees the rule and its use together. The mole-conversion and concentration table below is the single most-tested block in the chapter, and it appears in almost every Boards and NEET numerical.

Hand-drawn examples show molar-mass working such as H₂O = 18 g mol⁻¹ and CO₂ = 44 g mol⁻¹. A quick flow sketch links mass, moles and number of particles, and a worked limiting-reagent example shows which reactant runs out first, a favourite NEET and JEE numerical.

How to Use These Handwritten Notes for Revision

Use the pages in three short passes. First read a topic page, then cover the boxed answer and recall it, then solve two NCERT questions on it. This active loop fixes the rules faster than re-reading the textbook, and it works well for the numerical-heavy parts of this chapter. Keep a rough sheet beside you so every mole calculation is written out, not just read.

• Revise the mole-conversion flow the night before any test.
• Redraw each concentration formula from memory and check the units.
• Keep the class 11 chemistry handwritten notes chapter 1 Some Basic Concepts of Chemistry open beside the NCERT Solutions while practising Exercise 1.1 onwards.

Around 45 minutes is enough for a full revision of this chapter with these notes, which makes them ideal in the last week before an exam.

Student Feedback on the Some Basic Concepts of Chemistry Handwritten Notes

Students consistently rate the mole-conversion and concentration boxes as the part that saves them the most time. The feedback below comes from a Collegedunia poll run before the 2026 boards.

• In a Collegedunia survey of 12,180 students, 76% said the mole-conversion flow was their most-used revision page.
• Most-skipped sub-topic before the poll: limiting reagent, revised late by about 3 in 10 students.

Source: 2026-27 Class 11 Chemistry student poll. Sample of 12,180 students from CBSE schools across 15 states.

Where to Use These Notes Alongside Other Resources

These handwritten notes work best next to the point-wise Solutions, the summary Notes and the Formula Sheet for the same chapter. Read the notes first, then check the solutions, and keep the formula sheet for the final recap. Together they cover the theory, the practice and the last-minute revision a student needs for this chapter.

All Class 11 Chemistry Handwritten Notes by Chapter

The table links the handwritten notes for every Class 11 Chemistry chapter, so students can move across the course in one click. Some Basic Concepts of Chemistry is highlighted.

FAQs on Some Basic Concepts of Chemistry Handwritten Notes