15/11 The Atomic Structure and the Periodic Table

Atomic Structure
Topic 5 Atoms, Elements, Compounds 
15 November 2023
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Slide 1: Slide
ChemistrySecondary EducationAge 12,13

This lesson contains 32 slides, with interactive quiz and text slides.

Items in this lesson

Atomic Structure
Topic 5 Atoms, Elements, Compounds 
15 November 2023

Slide 1 - Slide

  • State the relative charges and relative masses of a proton, a neutron and an electron
  • Define proton number/atomic number as the number of protons in the nucleus of an atom
  • Define mass number/nucleon number as the total number of protons and neutrons in the nucleus of an atom
My Goals Today:

Slide 2 - Slide

Elements, Compounds, Mixtures Diagrams

Slide 3 - Slide

  • Draw the structure of sodium atom using the planetary model.
timer
2:00
Review

Slide 4 - Slide

Slide 5 - Slide

Discussion Forum
  • Since the size of the atoms is too tiny and we cannot compare their masses with conventional units, what unit do we use instead?
  • What is one relative atomic mass equal to?
  • Using this in q2, what mass of hydrogen is equal to carbon-12 atom?
  • What are the relative masses and charges of the sub-atomic particles in an atom?

Slide 6 - Slide

Atomic Mass Unit

Slide 7 - Slide

Masses and Charges

Slide 8 - Slide

Structure of the Atom

Slide 9 - Slide

Proton number (a.k.a Atomic Number, Z)
  • the number of protons in the nucleus of an atom
Mass number (a.k.a. Nucleon Number, A)
  • the total number of neutrons and protons in the nucleus of an atom
Definition of Terms

Slide 10 - Slide

Slide 11 - Slide

Simulating the Atomic Structure

Slide 12 - Slide

Simulating the Atomic Structure
T O  D O:
  • Listen carefully to Mr. Russel's instructions.
  • Open a tab for the online simulation.
  • Build the mentioned atom using the online simulation.
  • Let your classmates check your atoms.
timer
5:00
ACTIVITY 01

Slide 13 - Slide

Slide 14 - Link

Simulating the Atomic Structure
T O  D O:
  • Listen carefully to Mr. Russel's instructions.
  • Open a tab for the online simulation.
  • Build the mentioned atom using the online simulation.
  • Let your classmates check your atoms.
timer
5:00
ACTIVITY 01

Slide 15 - Slide

P (proton number) = Z (atomic number)

N (neutron number)

E (electron number)

A (mass number) = P + N
In symbols and equation,

Slide 16 - Slide

The Atomic Notation

Slide 17 - Slide

Slide 18 - Slide

Calculating the number of sub-atomic particles
T O  D O:
  • Listen carefully to Mr. Russel's instructions.
  • Complete the table by calculating the missing number of sub-atomic particles in each atom.
timer
5:00
ACTIVITY 02

Slide 19 - Slide

Slide 20 - Slide

Atomic Structure
Topic 5 Atoms, Elements, Compounds 
15 November 2023

Slide 21 - Slide

  • Determine the electronic configuration of elements and their ions with proton numbers 1 to 20, e.g. 2,8,3
  • State that:
  • (a) Group VIII noble gases have a full outer shell
  • (b) the number of outer shell electrons is equal to the group number in Groups I to VII
  • (c) the number of occupied electron shells is equal to the period number
My Goals Today:

Slide 22 - Slide

Electron shell diagrams
  • using the planetary model (Bohr's Model)

Electronic structure
  • using numbers / notation
Ways to illustrate the structure of an atom

Slide 23 - Slide

Electron Shell Diagram

Slide 24 - Slide

Examples - ESD
Hydrogen.                            Helium.                           Lithium.

Slide 25 - Slide

Examples - ESD
Beryllium.                            Boron.                           Carbon.

Slide 26 - Slide

Electronic structure
  • using numbers / notation



Second Way to illustrate the structure of an atom

Slide 27 - Slide

Atom (Neutral: 0)
  • when P = E

Ion (Charged: +/-)
  • when P is NOT EQUAL to E
Atom vs. Ion

Slide 28 - Slide

Slide 29 - Slide

Slide 30 - Slide

Determining the electronic configuration
T O  D O:
  • Listen carefully to Mr. Russel's instructions.
  • Complete the table by filling in the missing information.
timer
5:00
ACTIVITY 03

Slide 31 - Slide


Type two things you learned today.

Slide 32 - Open question