This document provides an overview of atomic theory and basic concepts in chemistry including:
1) Dalton's atomic theory which states that matter is made of extremely small indivisible particles called atoms.
2) Atoms of different elements have different properties and atoms of the same element are identical.
3) Chemical reactions involve changes in how atoms are combined, not in the atoms themselves.
4) The discovery of subatomic particles like electrons, protons and neutrons led to Rutherford's nuclear model of the atom with a small, dense nucleus.
5) The periodic table organizes elements based on atomic structure including atomic number and recurring trends in properties.
Topic Contains:
What is Thermo Chemistry ?
Define Origin of Heat of Reaction..
Exothermic Reaction..
Endothermic Reaction..
Graphical representation of Exothermic
and Endothermic reactions..
Different type of heat reactions..
Hess’s law..
PowerPoint Presentation on the topic - 'Atoms And Molecules'.
For Class:- 9th
Created By - 'Neha Rohtagi'.
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Best PowerPoint presentation on NCERT class 9 Atoms and Molecules as per CBSE syllabus it covers full chapter with all information.
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