Atoms are the smallest particle of a chemical element that can possibly exist. We have learnt that atoms and molecules are the basic building blocks of matter and the existence of different kinds of matter is due to different atoms which constitute them. Through CBSE class 9 science chapter 4 notes for Structure of atoms we understand the structure and composition of atoms in detail.
CBSE Class 9 Science Chapter 4 Structure Of The Atom Notes
Topics covered in Structure Of Atom Chapter:
- Charged Particles In Matter
- The Structure Of An Atom
- How are Electrons Distributed in Different Orbits (Shells)?
- Valency
- Atomic Number and Mass Number
- Isotopes
Frequently asked Questions on CBSE Class 9 Science Notes Chapter 4: Structure of An Atom
What are the main components of an atom?
Atoms are made up of three particles known as subatomic particles: protons, neutrons and electrons.
How can ‘Valency’ be defined?
The property of an element that determines the number of other atoms with which an atom of the element can combine is called as the Valency.
What are the uses of ‘Radioactive Isotopes’?
Radioactive isotopes are useful because either we can detect their radioactivity or we can use the energy they release.
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