Chemistry
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Punjab Chemistry Online 9th Class Test Lesson 1 Fundamentals of Chemistry
The Branch of Science which is concerned with the substances of which matter is composed the investigation of their properties…
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Punjab Chemistry Online 9th Class Test Lesson 2 Structure of Atom
According to Dalton that An Atom is and invisible, hard dense sphere, Atoms of the same element are alike, Atoms…
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Punjab Chemistry Online 9th Class Test Lesson 3 Periodic Table and Periodicity of Properties
Periodicity is one of the most fundamental aspects of the periodic table of the elements. Here is an explanation of…
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Punjab Chemistry Online 9th Class Test Lesson 4 Structure of Molecules
A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in…
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Punjab Chemistry Online 9th Class Test Lesson 5 Physical States of Matter
States of matter in physics are the distinct forms that different phases of matter take on. Four states of matter…
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