IB Grade 9 Chemistry | Chapter 2: The Building Blocks of Matter: Atoms, Elements, and the Periodic Table by Prakhar Chauhan | Learn Smarter
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Chapter 2: The Building Blocks of Matter: Atoms, Elements, and the Periodic Table

The chapter explores the fundamental building blocks of matter, focusing on atoms and their organization within the Periodic Table. It traces the historical evolution of atomic theory, introducing key figures such as Dalton, Thomson, Rutherford, and Bohr, while detailing the structure of atoms, including protons, neutrons, and electrons. The chapter emphasizes the significance of atomic number, mass number, and isotopes, as well as the predictive qualities of the Periodic Table in understanding the elements and their properties.

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Sections

  • 2

    The Building Blocks Of Matter: Atoms, Elements, And The Periodic Table

    This section explores the fundamental components of matter, focusing on atoms, elements, and their organization in the Periodic Table.

    Learning Practice

  • 2.1

    The Ever-Evolving Atom: A Historical Perspective

    This section explores the historical development of atomic theory from ancient philosophical ideas to modern scientific understanding, highlighting major contributors like Democritus, Dalton, Thomson, Rutherford, and Bohr.

    Learning Practice

  • 2.2

    Unpacking The Atom: Protons, Neutrons, And Electrons

    This section explores the components of an atom, detailing protons, neutrons, and electrons, and their roles in defining elements.

    Learning Practice

  • 2.3

    Defining Elements: Atomic Number, Mass Number, And Isotopes

    This section discusses the defining characteristics of elements, focusing on atomic number, mass number, and the concept of isotopes.

    Learning Practice

  • 2.4

    The Periodic Table: An Organized Universe Of Elements

    This section explores the structure and significance of the Periodic Table, emphasizing its organization based on atomic number and properties.

    Learning Practice

  • 2.5

    Trends In Reactivity And Properties Within Groups

    This section explores the trends in reactivity and properties of elements within specific groups of the Periodic Table, focusing on alkali metals and halogens.

    Learning Practice

References

Untitled document (10).pdf

Class Notes

Memorization

What we have learnt

  • Atoms are the basic units o...
  • The atomic number indicates...
  • Isotopes of an element have...

Final Test

Revision Tests