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ICSE Class 9 Chemistry Syllabus 2025 with Exam Pattern

Download the ICSE Class 9 Chemistry Syllabus 2025 PDF, including all chapters, exam pattern, practical work, and internal assessment details.
authorImageYashasvi Tyagi18 Jun, 2025
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ICSE Class 9 Chemistry Syllabus

ICSE Class 9 Chemistry Syllabus 2025 has been officially released. Chemistry is a core science subject that helps students understand the composition, structure, and changes in matter.

The syllabus includes essential topics such as the language of chemistry (symbols, formulae, and equations), chemical reactions, the study of water and hydrogen, atomic structure and bonding, the periodic table, gas laws, and environmental issues like atmospheric pollution.

It aims to build a strong foundation in theoretical concepts while encouraging practical understanding through experiments and lab work. Internal assessment carries 20 marks, equally split between the teacher and an external examiner, and includes practical work and project assignments. The syllabus promotes scientific thinking, problem-solving skills, and awareness of the role of chemistry in everyday life.

ICSE Class 9 Chemistry Syllabus Exam Pattern

As per the curriculum, the exam will be a two-hour session and carry a total of 80 marks. The exam will be divided into two sections:
  • Section I (40 marks) requires answers to all short-answer questions, covering the entire syllabus.
  • Part II (40 marks): Students need to answer only four out of six questions in this section.
To pass the exam, students are advised to study all chemical reactions.

ICSE Class 9 Maths Syllabus

ICSE Class 9 Chemistry Syllabus Chapter Wise List

The ICSE Class 9 Chemistry Syllabus provides all the necessary details for students to organise their studies. The key points in the ICSE Class 9 Chemistry Syllabus include:
  List of Topics and Chapters: The curriculum continues with a list of seven chapters and their crucial exam topics. These are listed below:
  • The Language of Chemistry
  • Chemical changes and reactions
  • Water
  • Atomic Structure and Chemical bonding
  • The Periodic Table
  • Study of the First Element -Hydrogen
  • Study of Gas Laws

ICSE Class 9 Biology Syllabus

  1. Details of Internal Assessment: As per the course outline, the Internal Assessment will rely on the hands-on tasks completed by the student and will carry 20 marks.
    We will observe how the materials provided to the students react to chemicals or heat. The curriculum includes a list of simple experiments that students might need to perform for their practical work. Check the table below for more details:
ICSE Class 9 Chemistry Syllabus 2025
Chapters Topics
1. The Language of Chemistry (i) Valency, radical and compound formulas, as well as an element's symbol. Balancing of simple chemical equations.
  • Symbol – definition; symbols of the elements used often.
  • Valency - definition; hydrogen combination and several valence electrons of the metals and non-metals; mono, di, tri, and tetravalent elements.
  • Radicals – definition; formulae and valencies.
  • Compounds – name, and formulae.
  • A chemical equation's meaning, instances of equations with one substance reacting and forming two or three substances, cases with two substances leading to one product, situations where two substances yield two products, and scenarios with two substances producing three or four products, along with the balancing of equations, are typically explained below, often using the trial-and-error method.
(ii) Relative Atomic Masses (atomic weights) and Relative Molecular Masses (molecular weights): either - standard H atom or 1/12th of carbon 12 atom.
  • Definitions
  • Calculation of Relative Molecular Mass and percentage composition of a compound.
2. Chemical changes and reactions (i) Types of chemical changes.
  • Direct combination
  • Decomposition
  • Displacement;
  • Double decomposition
  • (The above is to be taught with suitable chemical equations as examples).
(ii) Energy changes in a chemical change.
  • Exothermic and endothermic reactions with examples – evolution/absorption of heat, light, and electricity.
3. Water (i) Water as a universal solvent.
  • Mixtures' of solids in liquids; saturated solutions.
  • Qualitative effect of temperature on solubility (e.g. solutions of calcium sulphate, potassium nitrate, and sodium chloride in water).
(ii) Hydrated and anhydrous substances.
  • (a) Hydrated substances:
  • The water of Crystallisation – meaning and examples.
  • (b) Anhydrous substances:
  • Meaning and examples only
  • (c) Properties:
  • Efflorescence
  • Deliquescence
  • Hygroscopy
  • Removal of hardness
  • (i) By boiling
  • (ii) By the addition of washing soda
  • (Definition and examples of each of the above).
  • (iii)Drying and Dehydrating Agents Definition and examples only.
  • (iv) Soft water and Hard water
  • Meaning, (in terms of action of soap)
  • hard and soft water's advantages and disadvantages.
  • Types and causes of hardness
4. Atomic Structure and Chemical Bonding (i) Structure of an Atom, mass number, and atomic number, Isotopes, and Octet Rule.
  • Definition of an atom
  • The atom consists of an atomic number, mass, and a nucleus composed of protons and neutrons, along with electrons.
  • Electron distribution in the orbits - 2n2 rule, Octet rule. what causes an atom to be chemically active.
  • An explanation of isotopes, including hydrogen, carbon, and chlorine examples.
(ii) Structures of different compounds, orbit structure, and electrovalent and covalent bonding
  • (a) Electrovalent Bond
  • Definition
  • Atomic orbit structure for the production of electrovalent compounds (e.g. NaCl, MgCl2, CaO);
  • (b) Covalent Bond
  • Definition
  • Atomic orbitals play a role in creating covalent molecules, following the duplet and octet rules for electrons. Examples include hydrogen, chlorine, oxygen, nitrogen, hydrogen chloride, water, ammonia, carbon tetrachloride, and methane.
5. The Periodic Table
  • Mendeleev made important contributions, Dobereiner introduced Triads, Newland proposed the law of octaves, and the modern periodic law and table are significant.
  • There is a wide understanding of Dobereiner's triads, Newland's law of octaves, and Mendeleev's periodic law. The discovery of the atomic number led to the establishment of the modern periodic law.
  • The modern periodic table consists of groups 1 to 18 and periods 1 to 7. It is important to focus on specific groups like Group 1 (Alkali Metals), Group 2 (Alkaline Earth Metals), Group 17 (Halogens), and Group 18 (Zero Group).
6. Study of the First Element-Hydrogen
  • The place of the non-metal (Hydrogen) on the periodic table and the overall group traits related to valence electrons, burning, and ion creation relate to the element mentioned above.
(i) Hydrogen is produced by water, weak acids, and alkalis.
  • (a) Hydrogen from water:
  • How calcium, sodium, and potassium behave in cold water.
  • What happens when hot water interacts with magnesium.
  • How aluminium, zinc, and iron react to steam; (how iron and steam can react in both directions).
  • How steam affects non-metals, like carbon.
  • In the lab, students can observe how sodium and calcium react with water. They need to write down their observations and create equations for these reactions. The activity series is employed for the mentioned reactions.
  • (b) Displacement of hydrogen from dilute acids.
  • Sulfuric acid or hydrochloric acid in a weakened form reacts with the metals Mg, Al, Zn, and Fe. (To comprehend the reasons for not utilising different metals and diluting nitric acid.)
  • (c) Displacement of hydrogen from alkalis.
  • The effect of alkalis like NaOH and KOH on aluminium (Al), zinc (Zn), and lead (Pb) - the unique nature of these elements.
  • (ii) Using a regular lab method, not electrolysis, to make and gather hydrogen is essential.
  • The lab preparation should cover why zinc is used, how the gas pollutants are removed, and the safety steps taken during gas collection.
(iii) Industrial manufacture of hydrogen by Bosch process.
  • Main reactions and conditions.
  • Hydrogen is generally separated from CO2 and CO.
  • (iv) Oxidation and reduction reactions.
  • differences in how oxygen/hydrogen is added to and removed.
7. Study of Gas Laws (i) How gases act when temperature and pressure change; described by how tiny particles move (particles, atoms, molecules). Boyle's Law and Charles' Law are included, along with absolute zero, gas equation, and straightforward calculations.
  • How gases behave with shifts in temperature and pressure; explained by the motion of tiny particles (particles, atoms, molecules).
  • Boyle's Law is presented with an uncomplicated formula for easy calculations.
  • Charles' Law: a statement, a mathematical form, and some basic computations.
  • Absolute zero Kelvin scale of temperature.
  • Gas equation P1 V1 / T1 = P2 V2 / T2; simple relevant calculations based on a gas equation.
(ii) Relationship between Kelvin scale and Celsius Scale of temperature; Standard temperature and pressure.
  • temperature measurement conversion from the Celsius scale to the Kelvin scale and vice versa. Standard temperature and pressure. (Simple calculations).
8. Atmospheric pollution
  • (a) The composition, origin, and effects of acid rain.
  • When fossil fuels burn, sulphur in them creates sulphur oxides. Oxides of nitrogen form at high temperatures in furnaces and internal combustion engines. This leads to acid rain, impacting the chemistry of soil and water bodies. (Equations will be included).
  • (b) Global warming:
  • Greenhouse gases - where they come from and methods to decrease their amount in the air. (Water vapour, carbon dioxide, methane, and nitrogen oxides)
  • (c) Ozone depletion
  • Formation of ozone – relevant equations
  • Function in the atmosphere.
  • The ozone layer's harm – we need to identify the chemicals causing it, but we don't need to explain the reactions.

ICSE Class 9 Chemistry Syllabus Chapter 1 - The Language of Chemistry

  1. Element symbol – its meaning; valency; formulas for radicals and compounds. Balancing simple chemical equations.
  • Symbol – what it represents; commonly used symbols for elements.
  • Valency – its meaning; combining hydrogen and the number of valence electrons for metals and non-metals; elements with mono, di, tri, and tetra valency.
  • Radicals – their meaning; formulas and valances.
  • Compounds – names and formulas.
  • Chemical equation – its meaning; examples of equations with one reactant and two or three products, two reactants and one product, two reactants and two products, and two reactants and three or four products; balancing equations using the hit-and-trial method.
  1. Relative atomic masses (atomic weights) and relative molecular masses (molecular weights): are determined using either the standard hydrogen (H) atom or one-twelfth of the carbon-12 atom.
  • Definitions
  • Calculation of the relative molecular mass and percentage composition of a compound.

ICSE Class 9 Chemistry Syllabus Chapter 2 - Chemical Changes and Reactions

Types of chemical changes.

  • Direct combination
  • Decomposition
  • Displacement
  • Double decomposition
(The above to be taught with suitable chemical equations as examples). Energy alters during a chemical change. Exothermic and endothermic reactions happen, and they involve the release or absorption of heat, light, and electricity.

ICSE Class 9 Chemistry Syllabus Chapter 3 - Water

  1. Water as a universal solvent.
  • Mixtures of solids in water are referred to as solutions, especially those that are saturated.
  • The impact of temperature on solubility can be observed qualitatively, such as in the case of calcium sulphate, potassium nitrate, and sodium chloride solutions in water.
  1. Hydrated and anhydrous substances.
  2. Hydrated substances: Water of Crystallisation – meaning and examples
  3. Anhydrous substances: Meaning and examples only
  4. Properties:
  • Efflorescence
  • Deliquescence
  • Hygroscopy
  • Removal of hardness
  1. By boiling
  2. By addition of washing soda (Definition and examples of each of the above).
  3. Drying and Dehydrating AgentsMeaning and examples only.
  4. Soft water and Hard water
  • Meaning, (in terms of action of soap)
  • Advantages and disadvantages of soft water and hard water.
  • Types and causes of hardness.

ICSE Class 9 Chemistry Syllabus Chapter 4 - Atomic Structure and Chemical bonding

(i) Structure of an Atom, mass number and atomic number, Isotopes and Octet Rule.
  • Definition of an atom
  • Parts of an atom include the nucleus, which consists of protons and neutrons, surrounded by electrons. There are two important numbers: the mass number and atomic number.
  • Electrons are found in orbits, and their distribution follows the 2n^2 rule and the Octet rule. The chemical activity of an atom is explained by these rules.
  • Isotopes, like hydrogen, carbon, and chlorine, have the same atomic number but different mass numbers.
(ii) Electrovalent and covalent bonding, structures of various compounds – orbit structure (a) Electrovalent Bond
  • Definition
  • Atomic orbit structure for the formation of Electrovalent compounds (e.g. NaCl, MgCl2, CaO);
(b) Covalent Bond
  • Definition
  • Atomic orbit structure plays a role in forming covalent molecules by following the duplet and octet rule for electrons. Examples include hydrogen, chlorine, oxygen, nitrogen, hydrogen chloride, water, ammonia, carbon tetrachloride, and methane.

ICSE Class 9 Chemistry Syllabus Chapter 5 - The Periodic Table

Dobereiner noticed Triads, Newland put forth the Octaves law, and Mendeleev made contributions. There's the Modern Periodic Law and the Modern Periodic Table that has groups and periods.
  • Basic concept of Dobereiner's triads, Newland's octave rule, and Mendeleev's periodic law.
  • Finding the Atomic Number and its role in the foundation of the Modern Periodic law.
  • The structure of the Modern Periodic Table, including Groups 1 to 18 and Periods 1 to 7.
  • Noteworthy focus on Alkali metals (Group 1), Alkaline Earth metals (Group 2), Halogens (Group 17), and Noble Gases (Group 18).

ICSE Class 9 Chemistry Syllabus Chapter 6 - Study of the First Element - Hydrogen

Where the non-metal (Hydrogen) is located in the periodic table and its group characteristics in terms of valence electrons, burning, and ion formation are considered for the mentioned element. Hydrogen from: water, dilute acids and alkalis.
(a) Hydrogen from water:
  • The effect of cold water on sodium, potassium, and calcium.
  • The effect of hot water on magnesium.
  • The effect of steam on aluminium, zinc, and iron; (the ability to reverse the reaction between iron and steam).
  • The effect of steam on a non-metal (carbon).
Students can observe the effects of sodium and calcium on water in the lab. They should note what happens and write down the equations for these reactions. The use of an activity series can be applied to understand these reactions.

(b)Displacement of hydrogen from dilute acids: The effects of weak sulfuric acid or hydrochloric acid on metals like Mg, Al, Zn, and Fe (Exploring why certain metals and weak nitric acid are not used).

(c) Displacement of hydrogen from alkalis: The action of Alkalis ((NaOH, KOH) on Al, Zn and Pb – unique nature of these elements.

(ii) The process of getting hydrogen in a lab without using electrolysis is through a common method. When making it in the lab, it's important to explain why zinc is used, how impurities in the gas are dealt with, and the necessary precautions during the gas collection.

(iii) Industrial manufacture of hydrogen by Bosch process:
  • Main reactions and conditions.
  • Separation of CO2 and CO from hydrogen.
(iv) Oxidation and reduction reactions Differences in terms of addition and removal of oxygen/hydrogen.

ICSE Class 9 Chemistry Syllabus Chapter 7 - Study of Gas Laws

(i) Behaviour of gases act when temperature and pressure change; explanation using molecular motion (particles, atoms, molecules); Boyle’s Law and Charles’ Law; absolute zero; gas equation; basic related calculations.
  • Behaviour of gases act when temperature and pressure change; understanding it through how tiny particles, atoms, and molecules move.
  • Boyle’s Law: explaining it, writing the maths, and doing easy maths problems.
  • Charles’ Law: explaining it simply.
  • Absolute zero on the Kelvin temperature scale.
  • Gas equation P1 V1 / T1 = P2 V2 / T2; doing simple maths problems using the gas equation.
(ii) Connection between Kelvin and Celsius temperature scales; Standard temperature and pressure. Converting temperatures from Celsius to Kelvin and vice versa. Basic calculations for standard temperature and pressure.

ICSE Class 9 Chemistry Syllabus Chapter 8 -Atmospheric pollution

(a) Acid rain Composition, reason, and its effect: Sulphur found in fossil fuels produces sulphur oxides when burned. Elevated temperatures in furnaces and internal combustion engines create nitrogen oxides.
(Include equations). Acid rain influences the chemistry of soil and water bodies. 

(b) Global warming  Sources and methods to decrease the presence of greenhouse gases in the air (water vapour, carbon dioxide, methane, and nitrogen oxides).

(c) Ozone depletion
  • Formation of ozone – relevant equations
  • Function in the atmosphere.
  • Destruction of the ozone layer –chemicals responsible for this to be named but reactions not required.

ICSE Class 9 Chemistry Syllabus Internal Assessment of Practical Work

Applicants will need to watch how reagents or heat affect given substances. The tasks will be easy and might involve identifying specific gases from the list below.
Gases: Hydrogen, Oxygen, Carbon dioxide, Chlorine, Hydrogen chloride, Sulphur dioxide, Hydrogen sulphide, Ammonia, Water vapour, Nitrogen dioxide. Applicants should have finished the following basic practical exercises.
Simple experiments on:

Action of heat on the following compounds:

(a) copper carbonate, zinc carbonate
(b) washing soda, copper sulphate crystals
(c) zinc nitrate, copper nitrate, lead nitrate
(d) ammonium chloride, iodine, ammonium dichromate. Make observations, identify the products and make deductions where possible.

Action of dilute sulphuric acid on the following substances. (warm if necessary)

(a) a metal
(b)a carbonate
(c) a sulphide (
d) a sulphite  Make observations, identify the gas evolved and make deductions

Apply the flame test to identify the metal in the unknown substance.

(a) a sodium salt
(b) a potassium salt
(c) a calcium compound Basic tests involving hard water and soft water - determining hardness - simple softening method - heating temporarily hard water, using washing soda, and benefits of using detergents instead of soap in hard water. Identify the causes of water pollution in the area. Recommend measures to prevent it. 

ICSE Class 9 Chemistry Syllabus 2025 PDF Download Link

ICSE Class 9 Chemistry Syllabus 2025 has been officially released by the Council for the Indian School Certificate Examinations (CISCE). Students can download the complete syllabus in PDF format using the direct link provided below.

The PDF contains all the important chapters, exam pattern, marking scheme, practical work guidelines, and project assessment details. Having the syllabus in PDF form helps students plan their studies effectively and keep track of topics throughout the academic year. It's a good idea to save or print a copy for easy access and revision.


ICSE Class 9 Chemistry Syllabus 2025

Study without using the internet

Preparation Tips for ICSE Class 9 Chemistry

  • Start by reading the full syllabus and understanding the key concepts covered in each chapter.

  • Focus on writing and balancing chemical equations, understanding the periodic table, and learning about the properties of elements and compounds.

  • Perform lab experiments carefully and understand the science behind them. This helps in scoring well in the internal assessment.

  • Make summary notes with definitions, formulas, and examples for each topic.

  • Relate topics like water pollution, hydrogen fuel, and atmospheric gases to real-life examples and current events.

  • Follow the project and practical guidelines properly. Neat lab records and well-researched projects add to your internal marks.

  • Revise regularly and practice previous years’ questions and chemical equations to gain confidence before the exams.

ICSE Class 9 Chemistry Syllabus 2025 FAQs

Who releases the ICSE Class 9 Chemistry syllabus?

The Council for the Indian School Certificate Examinations (CISCE) officially releases the ICSE Class 9 Chemistry syllabus each year.

How much weightage is given to internal assessment in Chemistry?

Internal assessment carries 20 marks, divided equally between a teacher's evaluation and an external examiner’s assessment based on practical work and projects.

Is practical work compulsory in ICSE Class 9 Chemistry?

Yes, practical work is an essential part of the curriculum. Students must complete lab experiments, maintain records, and submit projects.

What is the exam pattern for Class 9 Chemistry?

The theory paper is of 80 marks, to be completed in 2 hours. It includes short-answer questions, chemical equations, definitions, and numerical problems.
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