# 15/11 The Atomic Structure and the Periodic Table

Atomic Structure
Topic 5 Atoms, Elements, Compounds
15 November 2023
1 / 32
Slide 1: Tekstslide
ChemistrySecondary EducationAge 12,13

In deze les zitten 32 slides, met interactieve quiz en tekstslides.

## Onderdelen in deze les

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

#### Slide 1 -Tekstslide

• 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 -Tekstslide

Elements, Compounds, Mixtures Diagrams

#### Slide 3 -Tekstslide

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

#### Slide 5 -Tekstslide

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?

Atomic Mass Unit

#### Slide 7 -Tekstslide

Masses and Charges

#### Slide 8 -Tekstslide

Structure of the Atom

#### Slide 9 -Tekstslide

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 11 -Tekstslide

Simulating the Atomic Structure

#### Slide 12 -Tekstslide

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.
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5:00
ACTIVITY 01

#### Slide 13 -Tekstslide

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.
timer
5:00
ACTIVITY 01

#### Slide 15 -Tekstslide

P (proton number) = Z (atomic number)

N (neutron number)

E (electron number)

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

#### Slide 16 -Tekstslide

The Atomic Notation

#### Slide 18 -Tekstslide

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 20 -Tekstslide

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

#### Slide 21 -Tekstslide

• 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 -Tekstslide

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 -Tekstslide

Electron Shell Diagram

#### Slide 24 -Tekstslide

Examples - ESD
Hydrogen.                            Helium.                           Lithium.

#### Slide 25 -Tekstslide

Examples - ESD
Beryllium.                            Boron.                           Carbon.

#### Slide 26 -Tekstslide

Electronic structure
• using numbers / notation

Second Way to illustrate the structure of an atom

#### Slide 27 -Tekstslide

Atom (Neutral: 0)
• when P = E

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

#### Slide 30 -Tekstslide

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 -Tekstslide

Type two things you learned today.