Lesson 4.2.2 The Halogens

1 / 23
volgende
Slide 1: Tekstslide
ChemSecondary EducationAge 13

In deze les zitten 23 slides, met interactieve quizzen en tekstslides.

Onderdelen in deze les

Slide 1 - Tekstslide

Today's Lesson Goals
  • identify the key terms about halogens
  • formulate a hypothesis 
  • analyse experimental data about the properties of halogens
  • formulate a conclusion based on the analysis

Slide 2 - Tekstslide

timer
4:00

Slide 3 - Tekstslide

Scientific Demonstration

Slide 4 - Tekstslide

Enquiry question: Would you expect bromine to be more reactive than chlorine?

Slide 5 - Open vraag

Experiment Results

Slide 6 - Tekstslide

Understanding key concepts

Slide 7 - Tekstslide


Are halogens metals or non-metals?
YES
NO

Slide 8 - Poll

Slide 9 - Tekstslide

What is the trend in melting points in Group 7? The melting point _______ from top to bottom.

Slide 10 - Open vraag

What is the trend in color in Group 7?
A
dark to light
B
light to dark
C
no difference

Slide 11 - Quizvraag

What is the trend in boiling points in Group 7? The boiling point _______ from top to bottom.

Slide 12 - Open vraag

What would predict about the boiling point and melting point of iodine, the next element in Group 7?
A
lower
B
higher
C
same as bromine

Slide 13 - Quizvraag

Iodine to be _________________ than bromine.
more reactive
less reactive

Slide 14 - Poll

Slide 15 - Tekstslide

The electronic structure for bromine is missing from the table. How many electrons do you predict will be in the outer shell?
A
5
B
6
C
7
D
8

Slide 16 - Quizvraag

What happens to the size of the atoms as you go down group 7?
A
become smaller
B
become bigger
C
all of the same size
D
disappear

Slide 17 - Quizvraag

Slide 18 - Tekstslide

What similarity is there in the structure of these atoms?
A
1 electron in the outer shell
B
same number of shells
C
7 electrons in the outer shell
D
no similarity

Slide 19 - Quizvraag

Suggest why this group is called Group "7".

Slide 20 - Open vraag

Slide 21 - Tekstslide

Collaborative Work
timer
5:00

Slide 22 - Tekstslide

timer
5:00

Slide 23 - Tekstslide