Chemistry begins in the stars. The stars are the source of the chemical elements, which are the building blocks of matter and the core of our subject.
~PETER ATKINS
Introduction Chemistry is the scientific discipline that studies the properties, composition, structure, and changes of matter. It explores the interactions and transformations of substances at the molecular and atomic levels. Chemistry is often referred...
J.J. Thomson’s discovery of electrons was a groundbreaking achievement that revolutionized our understanding of the structure of atoms. In the late 19th century, the prevailing belief was that atoms were indivisible and solid particles....
In ancient times, people observed and used certain elements that occurred naturally in their environment. Nine elements, including carbon, sulfur, iron, copper, silver, tin, gold, mercury, and lead, were known even before recorded history....
The word “periodic” means something that happens or occurs in a regular and repeating pattern. Let’s explain the term “periodic” using the examples of the cycle of day and night and also the changing...
The Periodic Table Song “The Periodic Table Song” is often used as a fun and engaging way to introduce and reinforce the knowledge of the elements. It can be a useful tool for students...
The periodic table is one of the most important tools in chemistry, providing a systematic and organized way of understanding the elements and their properties. It arranges all the known elements based on their...
Atoms are the smallest units of matter that retain the properties of an element. They consist of three basic components: protons, neutrons, and electrons. Protons are positively charged particles that are found in the...
by The Mind · Published September 25, 2022 · Last modified May 29, 2023
Matter As we look around, we see a large variety of things with different shapes, sizes, and textures. The air we breathe, the food we eat, stones, clouds, stars, plants and animals, even a...
7th Class / Chemistry / English Medium / Science
by Nancy Diana · Published January 7, 2021 · Last modified August 26, 2021
Every substance in the universe has the tendency to attain stability.
9th Class / Chemistry / English Medium / Science
by Nancy Diana · Published December 18, 2020 · Last modified August 26, 2021
Summary of atoms and molecules Summary The ancient philosophers have tried to understand the form of matter. Around 500 BC it was the Indian philosopher maharishi Canada who postulated that if we keep dividing...
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English Medium / Physics / Science
C. V. Raman and the Curious Case of the Ocean’s Blue Color
December 18, 2023
