Development of the Periodic Table

Development of the Periodic Table
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Development of the Periodic Table

Slide 1 - Diapositive

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Learning Objectives
At the end of the lesson, you will understand the historical development of the Periodic Table.
At the end of the lesson, you will be able to explain how elements are organized in the modern Periodic Table.
At the end of the lesson, you will recognize the significance of Mendeleev's contributions to the Periodic Table.
At the end of the lesson, you will identify the impact of sub-atomic discoveries on the organization of the Periodic Table.
At the end of the lesson, you will differentiate between metals, non-metals, and noble gases based on their properties.

Slide 2 - Diapositive

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What do you already know about the historical development of the Periodic Table?

Slide 3 - Carte mentale

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Historical lists of elements
Elements listed by atomic mass, no distinct grouping
Mendeleev's table introduced gaps for undiscovered elements
Grouped elements by chemical properties

Slide 4 - Diapositive

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Mendeleev's Periodic Table
Introduced gaps for undiscovered elements
Grouped elements by chemical properties
Primarily used atomic mass

Slide 5 - Diapositive

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Sub-atomic discoveries and their influence
Discoveries of electrons, protons, and neutrons
Allowed for more accurate organization by atomic number
Explained inconsistencies when ordered by atomic mass

Slide 6 - Diapositive

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Modern Periodic Table organization
Organized by atomic number
No gaps for elements up to a certain number
Groups elements by the number of electrons in their outer shell

Slide 7 - Diapositive

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Characteristics of noble gases
Noble gases in Group 0
Characterized by full outer shells, inert, and increasing boiling points down the group

Slide 8 - Diapositive

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Definition List
alkali metal: a metal in group 1 of the Periodic Table
atomic mass: the mass of an atom, typically measured in atomic mass units (u)
atomic number: the number of protons in the nucleus of an atom, which determines the element's position in the Periodic Table
(remaining definitions from previous response)

Slide 9 - Diapositive

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Write down 3 things you learned in this lesson.

Slide 10 - Question ouverte

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.
Write down 2 things you want to know more about.

Slide 11 - Question ouverte

Here, students enter two things they would like to know more about. This not only increases involvement, but also gives them more ownership.
Ask 1 question about something you haven't quite understood yet.

Slide 12 - Question ouverte

The students indicate here (in question form) with which part of the material they still have difficulty. For the teacher, this not only provides insight into the extent to which the students understand/master the material, but also a good starting point for the next lesson.