Unit 2 L1 Chemistry

Periodic Table
Unit 2 lesson 1

SWBAT:describe how the modern periodic table is organized by atomic number and grouped by element properties.

​Groups are Vertical and they tell you the Valence Electrons of the element.

Periods are Horizontal and they tell you the orbital they contain. .

​

Groups and Periods

Multiple Choice

What group and period is Germanium in (Ge)

• Group 14

  Period 4

• Group 4

  Period 4

• Group 14

  Period 3

Multiple Choice

What group and period is Argon (Ar) in?

• Group 7, Period 3

• Group 8, Period 2

• Group 16, Period 4
• Group 18, Period 3

​What is the role of Valence electrons in reactivity?

​

Valence Electrons

Multiple Choice

Which of these Elements is the most reactive?

• Oxygen (O)

• Nitrogen (N)

• Krypton (Kr)

• Iodine (I)

Open Ended

Why is Iodine a reactive Element?

Multiple Choice

potassium (K) contains how many valence electrons?

• 2

  and it is not that reactive

• 2

  And it is highly reactive

• 1 and it is not reactive

• 1 and it is highly reactive

Group names

Group 18 contains the NOBLE GASES
GROUP 1 CONTAINS ALKALI METALS
GROUP 17 CONTAINS HALOGENS

​

Names of Groups

Multiple Choice

Rubidium (Rb) would be considered a?

• alkaline earth metal
• alkali metal
• transition metal
• noble gas

​Work with your partner.
Answer the questions found in your worksheet.
6min to answer questions

​

PRACTICE

Multiple Choice

Which Group/Familly is the most stable and why?

• Alkaline metals (Group 1) because they only have 1 VE which means they don't have enough energy

• Halogens (Group 17)

  Because number 7 means stability and fullness

• Noble gases (Group 18)

  Because elements have a full valence electron shell.

Multiple Choice

Lithium (Li) is found in which group and Period?

• Group 2, Period 1
• Group 1, Period 3
• Group 2, Period 2
• Group 1, Period 2