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Chemistry-Class-8

30 posts

Examples of Chemical Change

Last Updated: 23 July 2025

Chemical Change is a change in which one substance changes into a new form whose properties are unique and different compared to the previous form. Chemical change is irre...read more

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Chemistry-Class-8

CBSE Class 8 Chemistry Notes

Last Updated: 23 July 2025

CBSE Class 8 Chemistry Notes are based on the latest syllabus prescribed by the Central Board of Education (CBSE). CBSE recommends NCERT books for studies in all the affil...read more

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School Learning

Chemistry-Class-8

Reactivity Series - Reactivity of Metals, Features, Tricks

Last Updated: 23 July 2025

Reactivity Series is an arrangement of metals from highest to lowest reactivity order. Therefore, the term "reactivity series" refers to a series of metals arranged in des...read more

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Chemistry-Class-8

Metals-and-Non-Metals

Combustible and Non-combustible Substances

Last Updated: 05 October 2021

We've seen coal burning in the air, releasing carbon dioxide and water into the atmosphere. When we ignite a candle in the air, CO2 is produced, along with heat and light....read more

School Learning

Chemistry-Class-8

What is Water Pollution?

Last Updated: 17 April 2024

Water is one of the most important natural resources on the planet, and it has existed for millennia. In reality, the same water we drink has been around in some form or a...read more

School Learning

Chemistry-Class-8

Exhaustible and Inexhaustible Natural Resources

Last Updated: 22 September 2021

In order to understand inexhaustible resources and exhaustible resources, we must know what is a resource? So, resources are anything that has some value and utility to sa...read more

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Chemistry-Class-8

What are the Conditions Necessary for Combustion?

Last Updated: 08 August 2024

We have seen coal burning in the air which produces carbon dioxide and water. When we burn a candle in the air, CO2, with heat and light is produced. All the examples are ...read more

School Learning

Chemistry-Class-8

Characteristics of Synthetic Fibres

Last Updated: 02 December 2022

Synthetic fibres and plastics, like natural fibres, are made up of polymers, which are very big units. Polymers are made up of a lot of little pieces. Rayon, Nylon, Polyes...read more

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Chemistry-Class-8

Combustion of Fuels - Definition, Types, Structure of Flame

Last Updated: 02 March 2022

We use different kinds of fuel for various purposes at home, in industry and for running automobiles. These fuels are cow dung, wood, coal, charcoal, petrol, diesel, compr...read more

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Chemistry-Class-8

What is Air Pollution? Definition, Types, Causes, Prevention

Last Updated: 23 July 2025

The negative changes that are taking place in our environment and how they are affecting our lives. Pollutants are substances that contaminate the air and water. Natural s...read more

School Learning

Chemistry-Class-8

Sources of Energy - Natural Gas, Petrochemicals and Alternative Sources

Last Updated: 01 September 2021

Natural gas is mostly produced from deep underground petroleum reserves. Because gases are lighter than oil, it occurs immediately above the crude oil layer. It is created...read more

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Chemistry-Class-8

Polyethylene Terephthalate

Last Updated: 17 August 2021

Fabrics are used to make the clothes we wear on a daily basis. Fabrics are composed up of fibers that come from both natural and man-made sources. Natural fibers such as w...read more

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School Learning

Chemistry-Class-8

Water Pollution - Definition, Causes, Prevention

Last Updated: 30 November 2021

We can survive for some time without food, but we cannot survive even for some minutes without air. This easy fact tells us how important fresh air is to livings. It is we...read more

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Chemistry-Class-8

Products of Coal: Coke, Coal Tar and Coal Gas

Last Updated: 01 April 2022

We use various materials for our basic needs. Some of them are found in nature and some have been made by human efforts. In the light of the availability of various resour...read more

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Chemistry-Class-8

Fractional Distillation of Petroleum

Last Updated: 04 April 2022

The existence of living beings is known to exist for millions of years now. We know that resources like coal and petroleum take billions of years to be formed as a result ...read more

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Chemistry-Class-8