Understanding the structure of an atom allows us to predict how atoms interact with each other. In this chapter, you will learn about atomic theories and their applications in determining of the electronic configurations of different elements. The competencies developed will enable you to advance your scientific knowledge of the structure and behaviours of matter.
The concept of the atom is fundamental to our understanding of matter. The word atom comes from the Greek word atomos, meaning indivisible. Therefore, an atom is the smallest possible unit of matter. It originated from ancient Greek philosophers like Democritus and Leucippus who proposed that matter is made up of indivisible particles called atoms. The atomic theories largely developed by scientists like John Dalton, Joseph John Thomson, Emest Rutherford and Niels Bohr in the 19 and carly 20e centuries describe atoms as consisting of a nucleus composed of protons and neutrons surrounded by a cloud of electrons. The discovery of these subatomic particles, along with advancements in quantum mechanics, has provided deeper insights into the behaviours of atoms and the forces that govern them.
Dalton's atomic theory
The studies about matter started in early 1800s when John Dalton postulated his theory, the Dalton's atomic theory. The theory provided the first comprehensive explanation of the nature of matter and laid a foundation for further developments in atomic theories and chemistry in general.
ORGANIC CHEMISTRY
ORGANIC CHEMISTRY VERSION 2
ACID, BASE, SALT, SOLUBLITY AND ELECTROCHEMISTRY
CHEMICAL EQUILIBRIUM
CHEMICAL KINETICS
COLLIGATIVE PROPERTIES
GAS
THERMOCHEMISTY
TWO COMPONENT LIQUID SYSTEM
The concept of the atom is fundamental to our understanding of matter. The word atom comes from the Greek word atomos, meaning indivisible. Therefore, an atom is the smallest possible unit of matter. It originated from ancient Greek philosophers like Democritus and Leucippus who proposed that matter is made up of indivisible particles called atoms. The atomic theories largely developed by scientists like John Dalton, Joseph John Thomson, Emest Rutherford and Niels Bohr in the 19 and carly 20e centuries describe atoms as consisting of a nucleus composed of protons and neutrons surrounded by a cloud of electrons. The discovery of these subatomic particles, along with advancements in quantum mechanics, has provided deeper insights into the behaviours of atoms and the forces that govern them.
Dalton's atomic theory
The studies about matter started in early 1800s when John Dalton postulated his theory, the Dalton's atomic theory. The theory provided the first comprehensive explanation of the nature of matter and laid a foundation for further developments in atomic theories and chemistry in general.
NEW SYLLABUS
GENERAL CHEMISTRYORGANIC CHEMISTRY
ORGANIC CHEMISTRY VERSION 2
ACID, BASE, SALT, SOLUBLITY AND ELECTROCHEMISTRY
CHEMICAL EQUILIBRIUM
CHEMICAL KINETICS
COLLIGATIVE PROPERTIES
GAS
THERMOCHEMISTY
TWO COMPONENT LIQUID SYSTEM
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