Periodic Table Elements

• Chemistry
• Secondary Education
• Age 12,13

IGCSE Chemistry 0620

Topic 2 The Periodic Table

13 September 2023

Describe how you feel right now 

using an emoji.

😒🙁😐🙂😃

• describe the Periodic Table as an arrangement of elements in periods and groups and in order of increasing proton number / atomic number
  
• describe the change from metallic to non-metallic character across a period
  
• describe the relationship between group number and the charge of the ions formed from elements in that group

I intend to:

13 September 2023, Wednesday

• explain similarities in the chemical properties of elements in the same group of the Periodic Table in terms of their electronic configuration  
• explain how the position of an element in the Periodic Table can be used to predict its properties  
• identify trends in groups, given information about the elements  

I intend to:

13 September 2023, Wednesday

IGCSE Chemistry 0620

Topic 2 The Periodic Table

13 September 2023

• What is the basis of grouping the elements during the time of Mendeleev and until now?

Retrieval Activity

13 September 2023, Wednesday

• What is the basis of grouping the elements during the time of Mendeleev and until now?

Retrieval Activity

13 September 2023, Wednesday

IGCSE Chemistry 0620

Topic 2 The Periodic Table

13 September 2023

• Why is it important to be aware of the chemical properties of substances before using them?

A question that matters!

13 September 2023, Wednesday

IGCSE Chemistry 0620

Topic 2 The Periodic Table

13 September 2023

Key Concepts

• Cobalt (II) chloride test — using anhydrous CoCl2
• Copper (II) sulfate test — using anhydrous CuSO4

13 September 2023, Wednesday

IGCSE Chemistry 0620

Topic 2 The Periodic Table

13 September 2023

Oral Presentation 1

The Periodic Table

13 September 2023, Wednesday

Processing

13 September 2023, Wednesday

• Over 100 chemical elements = isolated and identified
• Each element has one proton more than the previous.
• This is done so that elements end up in columns with other elements which have similar properties.
• Elements are arranged on the periodic table in order of increasing atomic number.
• Vertical columns = groups 
• Rows = periods

Processing

13 September 2023, Wednesday

• Valency (or combining power)  — tells you how many bonds an atom can make with another atom or how many electrons its atoms lose, gain or share, to form a compound

Oral Presentation 2

Periodic Trends

13 September 2023, Wednesday

Processing

13 September 2023, Wednesday

Metallic character of the elements:

• decreases as you move from left to right across a Period
• increases as you move down a Group

Reason for the trend:

• due to atoms more readily accepting electrons to fill their valence shells rather than losing them to have the previous, already full, electron shell as their outer shell

Properties of metals and non-metals

13 September 2023, Wednesday

Oral Presentation 3

Periodic Trends & Electronic Configuration

13 September 2023, Wednesday

Processing

13 September 2023, Wednesday

•  Electronic configuration —  arrangement of electrons into shells for an atom (e.g., the electronic configuration of carbon is 2, 4)

• The number of notations = number of occupied shells of electrons the atom has, showing the period
• The last notation = number of outer electrons the atom has, showing the group number

Processing

13 September 2023, Wednesday

•  Elements in the same group —  similar chemical properties due to the same number of outermost electrons

• When atoms collide and react, it is the outermost electrons that interact.

• Lithium and Sodium are in Group I. Do they have the same chemical properties? Explain in terms of the number of outermost electrons, how they react with Group VII elements to form ionic compounds.

A question that matters!

13 September 2023, Wednesday

Classwork 4

The Periodic Table

13 September 2023, Wednesday

Self-Assessment for Learning

30 August 2023, Wednesday

T O  D O:

• Identify two ideas you do not understand quite well in our sessions.
• Ask someone who can explain and write the explanations in your notebook.
• Verify your learning from a classmate by sharing it with the teacher.

Week 05 Reflection 1:

Why does a car tire explode 

when the temperature increases?