NSEJS Matter Nature and Behaviour Syllabus 2026

The National Standard Examination in Junior Science (NSEJS) is the first stage of the International Junior Science Olympiad (IJSO). It is conducted by the Indian Association of Physics Teachers (IAPT) in collaboration with the Homi Bhabha Centre for Science Education (HBCSE). 

NSEJS assesses students' foundational knowledge in Physics, Chemistry, Biology, and Mathematics up to Class 10. A clear understanding of the NSEJS Matter Nature and Behaviour Syllabus is a key part of the preparation, guiding students through the specific scientific principles and concepts tested.

Also Read: NSEJS Chemical Substances Syllabus

NSEJS Matter Nature and Behaviour Syllabus Overview

The NSEJS Syllabus broadly aligns with the secondary level (up to Class 10) CBSE curriculum in Science and Mathematics. It is designed to test a student's conceptual clarity and problem-solving abilities across various scientific domains. 

The syllabus includes:

• Matter-Nature and Behaviour (Chemistry & Physics Foundation)

• Chemical Substances - Nature and Behaviour

• Organization in the Living World (Biology)

• Life Processes (Biology)

• Motion, Force and Work (Physics)

• Effects of Current (Physics)

• Light (Physics)

• Our Environment (Environmental Science)

• Natural Resources (Environmental Science)

• Food Production (Biology)

NSEJS Matter Nature and Behaviour Syllabus PDF

Candidates preparing for NSEJS 2026 should refer to the official syllabus PDF to ensure they cover every topic prescribed for the examination. The syllabus helps students understand the scope of the "Matter – Nature and Behaviour" section and plan their preparation accordingly.

The NSEJS Matter Nature and Behaviour Syllabus PDF includes topics related to the classification and properties of matter, atomic structure, chemical reactions, acids, bases and salts, metals and non-metals, carbon compounds, and other fundamental chemistry concepts studied up to the Class 10 level. 

Complete NSEJS Matter Nature and Behaviour Syllabus 2026

This section covers the in-depth information for the Junior Science syllabus, with a specific focus on the 'Matter-Nature and Behaviour' segment, which is important for Chemical and Physical understanding.

• Matter Definition and Properties:

• Definition of matter; solid, liquid, and gas states.

• Characteristics: shape, volume, density.

• Change of state: melting (heat absorption), freezing, evaporation (cooling), condensation, sublimation.

• Nature of Matter:

• Elements, compounds, and mixtures.

• Heterogeneous and homogeneous mixtures, colloids, and suspensions.

• Solutions, concentration calculations.

• Methods for separating mixture components.

• Particle Nature, Basic Units:

• Atoms and molecules.

• Law of constant proportions.

• Atomic and molecular masses.

• Mole concept: relationship of mole to particle mass and number.

• Structure of Atoms:

• Electrons, protons, and neutrons.

• Valency, chemical formulas of common compounds.

• Isotopes and Isobars.

How to Prepare NSEJS Syllabus?

Preparing for the NSEJS requires a systematic approach and consistent effort.

• Understand Concepts: Focus on building strong conceptual clarity rather than rote memorization.

• Refer to Syllabus: Constantly refer to the NSEJS matter and its nature topics to ensure all areas are covered.

• Practice Regularly: Solve a variety of problems to improve application of concepts.

• Revise Consistently: Regular revision helps retain information and strengthens understanding.

• Time Management: Develop effective time management skills for the examination.