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Title: Class notes chemistry
Description: This document provides a comprehensive overview of fundamental concepts in chemistry, including the study of chemical reactions, atomic structure, and molecular interactions. It covers key topics such as the periodic tab...
Definition: Chemistry is the branch of science that deals with the study of composition, structure,
properties and changes of matter. It explores how substances interact with each other and with
energy, leading to chemical reactions.
It is often called 'central science' because it connects other natural sciences like physics,
biology and geology.
Terms used in Chemistry
The following are the terms used in chemistry:
1.Atoms and molecules: These are the basic building blocks of matter. The atom is made of
the nucleus and electron, molecule includes all two combined.
2.Elements: These are pure substances containing only one form of atom. Compounds on the
other hand is the chemical combination of two or more different atoms.
3. States of matter: These is the form in which substances can exist in. There are three states
of matter namely; solid, gas and liquid.
4. The periodic table: Is a systematic arrangements of elements according to their increasing
atomic number.
5. Chemical reaction: This occurs due to the breaking down or formation of bonds.
Branches of chemistry
1. Organic chemistry
2. Inorganic chemistry
3. Physical chemistry
4. Analytical chemistry
5. Industrial chemistry, etc.
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