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3E - periodic table
Periodic table and nomenclature
Watch the video available on the next slide.
You have to be able to explain the first 7 topics mentioned in the video.
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Tekstslide
Scheikunde
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Leerjaar 3
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Periodic table and nomenclature
Watch the video available on the next slide.
You have to be able to explain the first 7 topics mentioned in the video.
Slide 1 - Tekstslide
Slide 2 - Video
Elements with similar chemical properties are located in the same ...
A
period - horizontal
B
group - horizontal
C
period - vertical
D
group - vertical
Slide 3 - Quizvraag
Write down in your notebook:
Groups
: column (vertical):
elements with similar chemical properties. Know: GR 1, 17 & 18
Periods
: rows (horizontal):
increasing atomic number (amount of protons)
Slide 4 - Tekstslide
Where are the metal elements located in the periodic table?
A
Left-hand side
B
Right-hand side
Slide 5 - Quizvraag
Write down in your notebook:
metal elements (left-hand side of periodic table except H):
Shiny
Good conductors of heat and electricity
High melting points (strong metallic bond)
Ductile and malleable
Form alloys and ionic compounds.
Slide 6 - Tekstslide
Which is not an element?
A
Alloy
B
Noble metal
C
Alkali metal
D
Alkaline earth metal
Slide 7 - Quizvraag
Write down in your notebook:
Alkali metals
(GR1): react violently with water.
Can’t be found pure in nature.
Noble metals
: unreactive metals (f.i. Au (s), Pt (s), Ag (s)).
Alloy
: Mixture of two or more metals
Made in order to improve the properties (f.i. hardness or color).
Slide 8 - Tekstslide
Write down in your notebook:
non-metal elements (right-hand side of periodic table & H):
Poor conductors of heat and electricity
High melting points (strong metallic bond)
Brittle and dull.
Form ionic compounds (salts) and molecular compounds.
Slide 9 - Tekstslide
Halogens
(GR17): react easily, including with metals
Noble gases
(GR18): unreactive colorless gases
Slide 10 - Tekstslide
Vragen??
make exercise 15-19, 22-25 (2.2)
Slide 11 - Tekstslide
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