CBSE Class 10 Science Revised Syllabus 2020-21

CBSE Class 10 Science Revised Syllabus 2020-21

CBSE Class 10 Science Revised Syllabus 2020-21

Class 10 is a crucial point for students in their academic journey. Besides the marks scored in the board exam, performing well in class 10 will help students to choose and explore the desired stream for their higher studies. So, every student needs to study effectively and score good marks in the CBSE Class 10 board exam. Determination and consistency are the powerful tools to achieve success. CBSE Class 10 Science Revised Syllabus 2020-21

Chapter-wise CBSE Class 10 Science Notes

Class 10 science basically includes some important chapters from NCERT books like; Chemical reactions and equations, Electricity, Magnetic effects of electric current, Acids Bases and Salt, Control and Coordination, Reflection and Refraction of light, Carbon and its compounds, etc.

CBSE Class 10 Science Notes
Chapter 1 – Chemical Reactions and Equations
Chapter 2 – Acids, Bases and Salts
Chapter 3 – Metals and Non-metals
Chapter 4 – Carbon and Its Compounds
Chapter 5 – Periodic Classification of Elements
Chapter 6 – Life Processes
Chapter 7 – Control and Coordination
Chapter 8 – How do Organisms Reproduce?
Chapter 9 – Heredity and Evolution
Chapter 10 – Light Reflection and Refraction
Chapter 11 – Human Eye and Colourful World
Chapter 12 – Electricity
Chapter 13 – Magnetic Effects of Electric Current
Chapter 14 – Sources of Energy
Chapter 15 – Our Environment
Chapter 16 – Sustainable Management of Natural Resources

Chapter 1 – Chemical Reactions and Equations

Science is a fascinating field that helps us understand the world we live in. One of the ways we can gain insight into the processes that occur around us is through the study of chemical reactions. Chemical reactions can explain a wide range of phenomena, from the rusting of metal to the decomposition of organic matter. By examining the interactions between molecules and the changes they undergo during these reactions, we can gain a deeper understanding of the complex systems that make up our world.

Chapter 2 – Acids, Bases and Salts

Acids, bases, and salts are important classes of chemicals that have many practical applications in various fields, including chemistry, biology, and industry.

An acid is a substance that donates hydrogen ions (H+) to a solution when dissolved in water. Acids have a sour taste and can corrode metals. A base, also known as an alkali, is a substance that accepts hydrogen ions (H+) when dissolved in water. Bases have a bitter taste and are slippery to the touch. When an acid and a base are mixed, they undergo a chemical reaction called neutralization, which results in the formation of water and a salt. A salt is an ionic compound formed by the combination of a cation (positively charged ion) from a base and an anion (negatively charged ion) from an acid.

Chapter 3 – Metals and Non-metals

Alloys are metallic materials made by mixing two or more elements, at least one of which is a metal, to form a homogeneous mixture. The resulting alloy combines the desirable properties of its constituent elements to create a material with enhanced properties, such as greater strength, improved durability, and resistance to corrosion.

Examples of a few alloys –

  • Brass: an alloy of copper and zinc, typically containing between 60-90% copper and 10-40% zinc. Brass is corrosion-resistant and has a low melting point, making it ideal for use in applications such as plumbing fixtures, musical instruments, and decorative objects.
  • Bronze: an alloy of copper and tin, typically containing between 5-30% tin. Bronze is strong, corrosion-resistant, and has a low melting point, making it ideal for use in applications such as sculptures, bearings, and marine hardware.

Chapter 4 – Carbon and Its Compounds

When soap is added to water, the soap molecules undergo a process known as micelle formation. Micelles are spherical structures in which soap molecules arrange themselves in a specific way to minimize their contact with water. In a micelle, the hydrophobic tails of the soap molecules cluster together in the center of the sphere, while the hydrophilic heads face outwards, interacting with the surrounding water molecules.

Chapter 5 – Periodic Classification of Elements

In the early 19th century, the German chemist Johann Wolfgang Dobereiner proposed a concept called “triads,” in which he grouped three elements together based on their similar properties. Dobereiner noticed that the atomic mass of the middle element in a triad was approximately equal to the average of the atomic masses of the other two elements. While Dobereiner only identified a few triads from the elements known at that time, this concept contributed to the development of the periodic table of elements.

Chapter 6 – Life Processes

  • Maintenance of living organisms is crucial for their survival, regardless of whether they are in motion, at rest, or asleep. The processes that work together to maintain life are collectively known as life processes.
  • Examples of essential life processes include nutrition, respiration, circulation, and excretion. In unicellular organisms, all of these processes are carried out by a single cell.
  • However, in multicellular organisms, specialized organs and organ systems have developed to perform these functions efficiently.
  • For example, the digestive system in multicellular organisms is responsible for the breakdown and absorption of nutrients from food, while the respiratory system facilitates the exchange of gases such as oxygen and carbon dioxide.
  • The circulatory system, composed of the heart, blood vessels, and blood, transports nutrients, gases, and other essential substances throughout the body.
  • Lastly, the excretory system eliminates waste products from the body, helping to maintain homeostasis.

Chapter 7 – Control and Coordination

  • Organisms have the ability to move in response to various types of stimuli, such as light, heat, nutrients/food, and more. This ability to move allows organisms to find food, escape from danger, and seek out favorable environments.
  • In animals, all activities are controlled and coordinated by the nervous and endocrine systems. The nervous system uses electrical signals to transmit information rapidly, while the endocrine system uses hormones to transmit information more slowly but over longer distances.
  • Hormones are chemical messengers that are secreted by endocrine glands and assist the nervous system in carrying out various functions.
  • In plants, hormones also play a crucial role in coordinating movements, such as the opening and closing of stomata, the growth of roots and shoots, and responses to light and gravity. These hormones are produced in various parts of the plant, including the roots, shoots, and leaves, and are transported to other parts of the plant through the phloem and xylem.

Chapter 8 – How do Organisms Reproduce?

Reproduction is a fundamental biological process by which an organism produces offspring that are genetically similar to themselves. This process ensures the continuity of species, generation after generation, and is a defining characteristic of life on Earth.

Reproduction is essential for the survival and adaptation of species in changing environments. It allows for the production of new individuals that can adapt to new conditions and overcome environmental challenges. In addition, reproduction enables the evolution of new species through the accumulation of genetic variation over time.

Chapter 9 – Heredity and Evolution

Heredity is the passing of traits from one generation to the next, while evolution is the gradual change in the characteristics of a population over generations, which can lead to the development of new species and adaptation to the environment.

Chapter 10 – Light Reflection and Refraction

Light is a type of electromagnetic energy that is visible to the human eye. It travels in straight lines from its source and gets reflected off objects. Our eyes capture this reflected light, which is then processed by the brain to produce the perception of vision.

Chapter 11 – Human Eye and Colourful World

The human eye is a complex and remarkable sensory organ that allows us to perceive the world around us through the sense of vision. Its structure is similar to a camera, with the cornea and lens focusing light onto the retina at the back of the eye. Unlike a camera, the eye is a dynamic system that can adjust the amount of light entering the eye, and its sensitivity to different colors. Humans are blessed with two eyes that work together to provide a wider field of view and depth perception.

Chapter 12 – Electricity

  • An atom consists of a positively charged nucleus and negatively charged electrons that orbit around it.
  • In metals, valence electrons are free to move within the conductor, allowing for the flow of electric current.

Chapter 13 – Magnetic Effects of Electric Current

A magnet is a material that produces a magnetic field that can attract or repel other magnetic materials. Some materials, such as iron, nickel, and cobalt, can be magnetized and are attracted to magnets. Natural magnets, called lodestones, also exist and can attract such materials.

Chapter 14 – Sources of Energy

  • Energy is the capacity to perform work or cause change. It exists in various forms and can be transformed from one form to another. However, the usable form of energy is often lost as less usable forms in the environment.
  • Energy is mainly obtained from natural sources like the sun, oceans, wind, and fossil fuels, and is then converted into electrical energy for our daily use and benefits.

Chapter 15 – Our Environment

Abiotic components refer to the non-living chemical and physical components of the environment, including soil, air, water, temperature, and other similar factors. Biotic components refer to the living organisms of the environment, including plants, animals, microbes, and fungi.

An ecosystem includes both biotic and abiotic components, where all living things such as plants, animals, and organisms interact with each other and with their nonliving environments, such as weather, earth, sun, soil, climate, and atmosphere, in a given area.

Chapter 16 – Sustainable Management of Natural Resources

The management of natural resources is crucial for several reasons, including:

  • Maintaining a balance in the ecosystem
  • Preventing further environmental destruction
  • Avoiding overconsumption of natural resources

CBSE Notes for Class 10 Science Free Download for All Chapters

Download PDF of NCERT Solutions for Class 10 Science

Chapter NameCBSE Class 10 Science Study NotesNCERT Solutions Download Class 10
Chemical Reaction and EquationCBSE Class 10 Chapter 1 Science Notes Chemical Reaction and EquationNCERT Solutions for class 10 chapter 1 Chemical Reaction and Equation
Acid Bases and SaltCBSE Class 10 Chapter 2 Science Notes Acid Bases and SaltNCERT Solutions for class 10 chapter 2 Acid Bases and Salt
Metals and Non MetalsCBSE Class 10 Chapter 3 Science Notes Metals and Non MetalsNCERT Solutions for class 10 chapter 3 Metals and Non Metals
Carbon and Its CompoundsCBSE Class 10 Chapter 4 Science Notes Carbon and Its CompoundsNCERT Solutions for class 10 chapter 4 Carbon and Its Compounds
Periodic Classification of ElementsCBSE Class 10 Chapter 5 Science Notes Periodic Classification of ElementsNCERT Solutions for class 10 chapter 5 Periodic Classification of Elements
Life ProcessessCBSE Class 10 Chapter 6 Science Notes Life ProcessessNCERT Solutions for class 10 chapter 6 Life Processess
Control and CoordinationCBSE Class 10 Chapter 7 Science Notes Control and CoordinationNCERT Solutions for class 10 chapter 7 Control and Coordination
How do Organisms reproduceCBSE Class 10 Chapter 8 Science Notes How do Organisms reproduceNCERT Solutions for class 10 chapter 8 How do Organisms reproduce
Heredity and EvolutionCBSE Class 10 Chapter 9 Science Notes Heredity and EvolutionNCERT Solutions for class 10 chapter 9 Heredity and Evolution
Light Reflection and RefractionCBSE Class 10 Chapter 10 Science Notes Light Reflection and RefractionNCERT Solutions for class 10 chapter 10 Light Reflection and Refraction
Human Eye and Colourful WorldCBSE Class 10 Chapter 11 Science Notes Human Eye and Colourful WorldNCERT Solutions for class 10 chapter 11 Human Eye and Colourful World
ElectricityCBSE Class 10 Chapter 12 Science Notes ElectricityNCERT Solutions for class 10 chapter 12 Electricity
Magnetic Effects of Electric CurrentCBSE Class 10 Chapter 13 Science Notes Magnetic Effects of Electric CurrentNCERT Solutions for class 10 chapter 13 Magnetic Effects of Electric Current
Sources of EnergyCBSE Class 10 Chapter 14 Science Notes Sources of EnergyNCERT Solutions for class 10 chapter 14 Sources of Energy
Our EnvironmentCBSE Class 10 Chapter 15 Science Notes Our EnvironmentNCERT Solutions for class 10 chapter 15 Our Environment
Sustainable Management of Natural ResourcesCBSE Class 10 Chapter 16 Science Notes Sustainable Management of Natural ResourcesNCERT Solutions for class 10 chapter 16 Sustainable Management of Natural Resources

CBSE Class 10 Syllabus and deleted portion for 2020-2021

Check subject-wise details of the deducted portion of CBSE Class 9 syllabus from the following links:

CBSE English Syllabus For Class 10 2020-2021 Session – Language And Literature  CBSE Class 10 Social Science Syllabus For Academic Year 2020-2021  
CBSE Syllabus For Class 10 Maths For Academic Year 2020-2021  CBSE Class 10 Science Syllabus For Academic Year 2020-2021  
CBSE Class 10 Deleted Social Science Syllabus Pdf 2020-21  CBSE Class 10 Maths Syllabus 2020: Check Topics Removed From Syllabus For 2020-21  
Class 10th CBSE Science Deleted Topics In 2020-21  Artificial Intelligence Syllabus(AI) For Class 10 Students By School Connect Online  
CBSE Class 10 Science Revised Syllabus 2020-21  CBSE Class 10 AI Syllabus
CBSE Class 8 AI SyllabusDownload Latest CBSE Class 10 Maths Sample Papers
CBSE Class10 Maths Sample Question Paper  Free CBSE Class 10 Mock Test Questions & Answers  

More Reference Links –

  JEE Main Mock Test Series 2020: Test Yourself With Free JEE Main previous year papers  CBSE English Syllabus For Class 10 2020-2021 Session – Language And Literature  
NTSE 2020 Exam Pattern, Exam Duration And Marking Scheme  CBSE Class 10 Social Science Syllabus For Academic Year 2020-2021  
JEE Main Sample Paper 2020, IIT JEE Mains Mock  CBSE Syllabus For Class 10 Maths For Academic Year 2020-2021  
  NEET Preparation 2020: How to crack NEET 2020?  CBSE Class 10 Science Syllabus For Academic Year 2020-2021  
NEET Sample Question Paper with Answer Keys for 2020CBSE Class 10 Deleted Social Science Syllabus Pdf 2020-21  
NTSE 2020 Registration-Direct Link, State-Wise NTSE  CBSE Class 10 Maths Syllabus 2020: Check Topics Removed From Syllabus For 2020-21  
NTSE Exam 2020-2021 – Eligibility, Exam Pattern, Dates  Class 10th CBSE Science Deleted Topics In 2020-21  
NTSE Exam Syllabus  CBSE Class 10 Science Revised Syllabus 2020-21  
Artificial Intelligence Syllabus For Class 10 Students By School Connect Online  CBSE Class 12 Biology Syllabus 2020-2021  
CBSE Class 12 Chemistry Syllabus 2020-2021  CBSE Class 12 Maths Syllabus 2020-2021  
CBSE Class 12 Physics Syllabus 2020-2021  CBSE Syllabus 2020-21: Check Deleted Topics From 12th Physics Syllabus 2020-21  
CBSE Class 12 Maths Deleted Syllabus Portion For 2020-21  CBSE Class 12 Business Studies Syllabus 2020-21 (Revised): Download Pdf  
CBSE Class 12 Chemistry Deleted Syllabus Portion For 2020-21  CBSE Class 12 Accountancy Deleted Syllabus Portion For 2020-21  
NCERT Solutions For Class 12 MathsCBSE AI Syllabus Class 8
CBSE Syllabus 2020-21: Check Deleted Topics From 12th Physics Syllabus 2020-21  JEE Mains Syllabus 2020-21
CBSE Class 6 Geography SyllabusNEET Syllabus 2020-21

Other National and International Level Olympiads

AI OlympiadInternational Artificial Intelligence Olympiad 2020-21
Coding OlympiadInternational Coding Olympiad 2020-21
IMOInternational Maths Olympiad 2020-21
ISOInternational Science Olympiad 2020-21
KVPYKishore Vaigyanik Protsahan Yojana

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