L8 - Group I properties

Lesson 1 - What is IGCSE Chemistry?
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10
Lesson 8 - Group I Properties
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Slide 1: Slide
ChemistrySecondary Education

This lesson contains 35 slides, with interactive quizzes and text slides.

time-iconLesson duration is: 55 min

Items in this lesson

Lesson 1 - What is IGCSE Chemistry?
4
10
Lesson 8 - Group I Properties

Slide 1 - Slide

Today, I'm going to...
  • know the name of the Group I elements,
  • be able to make sense of the trends down the group in terms of properties and 
  • understand why the properties of other elements in the same group can help you predict the identity of an unknown element.
Lesson 8 - Group I properties

Slide 2 - Slide

  • I can state the name of group I elements.
  • I can identify the group trend regarding hardness, melting and boiling points, density, and reactivity.
  • Given information about the other elements, I can predict the properties of rubidium and caesium.
I am successful if...

Slide 3 - Slide

Slide 4 - Slide


Are the elements of the Periodic Table arranged according to density? Explain your choice.

Slide 5 - Open question

Slide 6 - Slide

Group I elements

Slide 7 - Slide

Group I elements
Alkali Metals

Slide 8 - Slide

Group I elements
Alkali Metals

Slide 9 - Slide

Group I elements
Alkali Metals

Slide 10 - Slide

Group I elements
Alkali Metals
Why Alkali?

Slide 11 - Slide

Group I elements
Alkali Metals
+  water
+  water
+  water
+  water
+  water
+  water
Why Alkali?

Slide 12 - Slide

Group I elements
Alkali Metals
+  water
alkaline 
+  water
+  water
+  water
+  water
+  water
alkaline 
alkaline 
Why Alkali?

Slide 13 - Slide

Group I elements
Alkali Metals
+  water
alkaline 
+  water
+  water
+  water
+  water
+  water
alkaline 
alkaline 
Why Alkali?

Slide 14 - Slide

Slide 15 - Link

timer
4:30

Slide 16 - Slide

Slide 17 - Link

Slide 18 - Slide


Which symbol represents the most reactive alkali metal?
A
Ca
B
Cr
C
Cs
D
Cu

Slide 19 - Quiz


How does the melting point change down the alkali metals group?

Slide 20 - Open question


How does the density change down the alkali metals group?

Slide 21 - Open question

Which words can be used to describe a Group I element?
conductor
dense
dull
hard
inert
insulator
lustrous
reactive
soft
britt;e

Slide 22 - Drag question


Which symbol represents the element with an electron arrangement of 2, 8, 1?
A
Cs
B
K
C
Li
D
Na

Slide 23 - Quiz


Using the following electronic configuration:
Li = 2, 1                    Na = 2, 8, 1                   K = 2, 8, 8, 1 
Explain how you can tell that all these elements belong to Group I.

Slide 24 - Open question

Slide 25 - Slide

Slide 26 - Slide

Observations must include:
  • Gas production
  • Heat produced by the reaction 
  • Production of alkaline solution
  • Production of flame
SDA 1.2 (Practical)
Potassium + water

Slide 27 - Slide

Slide 28 - Slide

Slide 29 - Slide

Slide 30 - Slide

Slide 31 - Slide


How does the reactivity change down the alkali metals group?

Slide 32 - Open question

Slide 33 - Slide

  • I can state the name of group I elements.
  • I can identify the group trend regarding hardness, melting and boiling points, density, and reactivity.
  • Given information about the other elements, I can predict the properties of rubidium and caesium.
I am successful if...

Slide 34 - Slide

Self-check
  • Open your notebook.
  • Look for this.
  • Read.
  • Reflect.
  • Complete.

Slide 35 - Slide