Academia Aeternum · Chemistry

Matter, Energy
& Transformation

From atomic structure to organic reactions — curated notes, MCQs, and textbook exercises for CBSE, JEE & NEET aspirants.

Class IX – XII JEE Mains & Advanced NEET UG CBSE Boards
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🧪 Basic & Fundamentals
Notes
THERMODYNAMICS-Notes


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Notes
CHEMICAL BONDING AND MOLECULAR STRUCTURE-Notes

In this chapter, we explore how atoms achieve stability by forming chemical bonds. We study the different types of bonds, the role of electrons in bond formatio...

Notes
CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-Notes

The study of chemical elements becomes truly meaningful only when their vast diversity is arranged into an orderly system. This chapter introduces the scientifi...

Notes
Structure of Atom-Notes

Understanding atomic structure is essential for mastering modern chemistry. From Bohr’s model to quantum numbers, this chapter forms the foundation for JEE, NEE...

Notes
Some Basic concepts of chemistry-Notes

Chemistry begins with measurement, logic, and numbers—and this chapter lays the foundation for everything that follows. Some Basic Concepts of Chemistry introdu...

Notes
Carbon and its Compounds-Notes

Carbon is one of the most remarkable elements on Earth, forming the basis of all living and many non-living substances around us. NCERT Class X Science Chapter ...

Notes
Metals and Non-metals-Notes

Chapter 3 "Metals and Non-Metals" explores the fundamental differences between these two essential groups of elements. Metals, characterized by their ...

Notes
STRUCTURE OF THE ATOM-Notes

The “Structure of the Atom” marks a major milestone in our scientific journey through chemistry. This chapter unveils how scientists gradually discovered that a...

Notes
ATOMS AND MOLECULES-Notes

Atoms and Molecules form the foundation of Chemistry, helping us understand the makeup of everything in our universe. This chapter introduces the concept of ato...

Notes
Acids, Bases and Salts-Notes

Acids, bases, and salts are essential chemical substances that play a major role in our daily lives. Chapter 2 of the NCERT Class 10 Science textbook, “Acids, B...

Notes
Chemical Reactions and Equations-Notes

Chemical reactions are everywhere around us—rusting of iron, burning of fuels, digestion of food, photosynthesis in plants, and many more. A chemical reaction c...

Notes
Is Matter Around Us Pure-Notes

The world around us is made up of different kinds of substances, but are all of them pure? In this chapter, Is Matter Around Us Pure, we explore the difference ...

Notes
Matter in Our Surroundings - Notes

This post is a collection of resources for students who are looking for solutions to the exercises of Chapter 1: Matter in Our Surroundings from the Class 9 Sci...

🎯 MCQs & True/False
True-False
THERMODYNAMICS-True/False


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MCQs
THERMODYNAMICS-MCQs


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True-False
CHEMICAL BONDING AND MOLECULAR STRUCTURE-True/False

Chemical Bonding and Molecular Structure form the foundation of chemical science, explaining how atoms interact to create the vast diversity of substances aroun...

MCQs
CHEMICAL BONDING AND MOLECULAR STRUCTURE-MCQs

Chemical Bonding and Molecular Structure forms the backbone of modern chemistry, explaining how atoms combine to create the vast variety of substances around us...

True-False
CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-True/False

Understanding the periodic classification of elements is fundamental to mastering Chemistry, as it connects atomic structure with observable chemical behavior. ...

MCQs
CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-MCQs

The chapter Classification of Elements and Periodicity in Properties forms the conceptual backbone of modern chemistry, linking atomic structure with observable...

True-False
Structure of atom-True/False

Understanding the Structure of Atom forms the backbone of modern chemistry, linking microscopic particle behavior with observable chemical properties. This chap...

MCQs
Structure of atom-MCQs

These multiple-choice questions are carefully designed to strengthen conceptual clarity and analytical thinking in the chapter Structure of Atom. Beginning with...

True-False
Some Basic concepts of chemistry-True/False

This carefully curated set of True and False statements is designed to reinforce conceptual clarity in NCERT Chemistry Class XI, Chapter 1: Some Basic Concepts ...

MCQs
Some Basic concepts of chemistry-MCQs

These 50 multiple-choice questions are carefully designed to reinforce and assess conceptual clarity in NCERT Class XI Chemistry Chapter 1 – Some Basic Concepts...

True-False
Carbon and its Compounds-True/False

"Carbon and Its Compounds" is a fundamental chapter in Class 10 Science that explores the versatile nature of carbon, its bonding properties, and its ...

MCQs
Carbon and its Compounds-MCQs

Understanding carbon and its vast family of compounds is essential to grasp the fundamentals of organic chemistry at the Class X level. This chapter explains ho...

True-False
Metals and Non-metals-True/False

Welcome to the True/False questionnaire for NCERT Class 10 Science Chapter 3 "Metals and Non-Metals." This set of thoughtfully crafted statements help...

MCQs
Metals and Non-metals-MCQs

Understanding the properties, reactions, and applications of metals and non-metals is a key part of NCERT Class X Science. To help students strengthen conceptua...

True-False
STRUCTURE OF THE ATOM-True/False

Understanding the structure of the atom is fundamental to modern chemistry. This set of True/False questions for NCERT Class IX Chapter 4, "Structure of th...

MCQs
STRUCTURE OF THE ATOM-MCQs

The chapter “Structure of the Atom” introduces the fascinating world of subatomic particles — electrons, protons, and neutrons — and the models proposed by scie...

True-False
ATOMS AND MOLECULES-True/False

This True/False questionnaire on NCERT Class 9 Chemistry Chapter 3 "Atoms and Molecules" is designed to help students test their conceptual understand...

MCQs
ATOMS AND MOLECULES-MCQs

Understanding the concepts of atoms and molecules is a fundamental part of Class 9 Science. Chapter 3 of NCERT introduces learners to the building blocks of mat...

True-False
Acids, Bases and Salts-True/False

Test your understanding of NCERT Class 10 Science Chapter 2, "Acids, Bases and Salts," with this carefully curated True/False questionnaire. These fac...

MCQs
Acids, Bases and Salts-MCQs

Welcome to our comprehensive collection of Class 10 Science Chapter 1 – Acids, Bases and Salts MCQs with answers and explanations. These multiple choice questio...

True-False
Chemical Reactions and Equations-True/False

A collection of 25 True/False questions based on NCERT Class 10 Chemistry Chapter "Chemical Reactions and Equations" with explanations to support lear...

MCQs
Chemical Reactions and Equations-MCQs

This set of 50 Multiple Choice Questions (MCQs) with answers and detailed explanations is designed for Class 10 Chemistry NCERT Chapter 1 – Chemical Reactions a...

True-False
Is Matter Around Us Pure-True/False

These 25 True/False questions are crafted to help learners explore fundamental concepts from "Is Matter Around Us Pure." The set spans the definitions...

True-False
Matter in Our Surroundings-True/False

The following 25 True/False questions offer a comprehensive check of essential ideas from the chapter "Matter in Our Surroundings." These questions ta...

MCQs
Matter in Our Surroundings-MCQs

Prepare effectively for your Class 9 Science exams with these 50 multiple choice questions (MCQs) based on the NCERT Chapter “Matter in Our Surroundings”. These...

MCQs
Is Matter Around Us Pure-MCQs

The world around us is made up of different kinds of substances, but are all of them pure? In this chapter, Is Matter Around Us Pure?, we will explore the diffe...

📘 Textbook Exercises
Exercise
THERMODYNAMICS-Exercises


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Exercise
CHEMICAL BONDING AND MOLECULAR STRUCTURE-Exercises

Chemical Bonding and Molecular Structure forms the backbone of chemistry, as it explains how atoms combine to create the countless substances around us. This ch...

Exercise
CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-Exercises

The solutions presented in this section are designed to help Class XI students develop a clear and logical understanding of NCERT Chemistry Chapter 3, Classific...

Exercise
Structure of atom-Exercises

The Structure of Atom forms the foundation of modern chemistry, linking microscopic particles to observable chemical behavior. This chapter introduces students ...

Exercise
Some Basic concepts of chemistry-Exercises

The notebook exercise solutions for NCERT Class XI Chemistry Chapter 1, Some Basic Concepts of Chemistry, are designed to build a rock-solid foundation in quant...

Exercise
Carbon and its Compounds-Exercises

Chapter 4, Carbon and Its Compounds, introduces students to the extraordinary versatility of carbon—an element that forms the basis of all living and many indus...

Exercise
Metals and Non-metals-Exercises

Welcome to the complete textbook solution guide for NCERT Class 10 Science Chapter 3 "Metals and Non-Metals." This comprehensive resource is designed ...

Exercise
STRUCTURE OF THE ATOM-Exercise

This page provides clear, comprehensive answers to textbook exercise questions from NCERT Class 9 Science Chapter 4: Structure of the Atom. It covers foundation...

Exercise
ATOMS AND MOLECULES-Exercise

Atoms and Molecules—Chapter 3 of NCERT Class 9 Science—lays the foundation for understanding the building blocks of matter. These first six exercise questions c...

Exercise
Acids, Bases and Salts-Exercise

Master the key concepts of acids, bases and salts with clear answers and explanations for Class X NCERT Chapter-2 exercises, covering pH behaviour, neutralisati...

Exercise
Chemical Reactions and Equations-Exercise

This chapter introduces students to the basics of chemical reactions and equations, as per the NCERT Class 10 Chemistry textbook. It covers how to write and bal...

Exercise
Is Matter Around Us Pure-Exercise

Textbook Exercise – Is Matter Around Us Pure? The textbook exercises for this chapter are designed to help you apply what you have learned about pure substan...

Exercise
Matter in our Surroundings - Exercises

This post a collection of resources for students who are looking for solutions to the exercises of Chapter 1: Matter in Our Surroundings from the Class 9 Scienc...


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