Overview of the Corrosion Carol Powell Behaviour of Metals ...
C3 Patterns of Behaviour - Transition Metals
16
© Boardworks Ltd 2003 THE TRANSITION METALS
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Transcript of C3 Patterns of Behaviour - Transition Metals
No Slide Title© Boardworks Ltd 2003
The Transition elements
Transition means “an in between state” and the transition elements come in between Group 2 and Group 3.
Transition Elements
© Boardworks Ltd 2003
Properties – density
Similarities are more noticeable than differences although there are still some broad patterns.
They are all dense which is what we expect of metals.
Sc
Ti
V
Cr
Mn
Fe
Co
Ni
Cu
Zn
© Boardworks Ltd 2003
Properties – melting point
Melting points show no regular pattern – other than nearly all being high which is typical of metals.
(Note zinc doesn’t fit very well on either density or melting point.)
Sc
Ti
V
Cr
Mn
Fe
Co
Ni
Cu
Zn
Properties – reactivity
Again it is similarities that stand out rather than differences: they tend to react relatively slowly (e.g.) with air, water and acid.
The general trend is to reduced activity across the Periodic Table but again the trend is far from perfect with zinc in particular being more reactive than you might expect.
General reduced reactivity
Sc
Ti
V
Cr
Mn
Fe
Co
Ni
Cu
Zn
6.unknown
Properties – catalysis
A catalyst is a substance that speeds up a chemical reaction without being used up.
Catalysts are hugely valuable in industry where they can save time and energy.
Many transition elements ( and their compounds) are catalysts.
V
Ti
Uses
The three most commonly known transition elements are iron or steel, copper and zinc.
iron or steel
General engineering metal
© Boardworks Ltd 2003
iron or steel
V
Ti
Fe
Ni
Pair the statement about the transition elements with the words.
The **** elements fit between group 2 and 3.
catalysts
reactive
transition
metals
transition elements?
They are strong.
They are non-conductors.
© Boardworks Ltd 2003
used for?
Plumbing work.
Electrical work
© Boardworks Ltd 2003
Transition elements can speed up other reactions without getting used up in the process.
What do we call substances that do this?
Capitalists
Catalysts
Catholics
Catapults
What colour compound does copper usually form?
Blue
Yellow
Red
Violet
© Boardworks Ltd 2003
How would you describe the reactivity of transition elements within the Periodic Table?
Always more reactive across periods (left to right).
Generally less reactive across periods (left to right).
No change in reactivity.
0
1
2
3
4
5
6
7
8
9
The Transition elements
Transition means “an in between state” and the transition elements come in between Group 2 and Group 3.
Transition Elements
© Boardworks Ltd 2003
Properties – density
Similarities are more noticeable than differences although there are still some broad patterns.
They are all dense which is what we expect of metals.
Sc
Ti
V
Cr
Mn
Fe
Co
Ni
Cu
Zn
© Boardworks Ltd 2003
Properties – melting point
Melting points show no regular pattern – other than nearly all being high which is typical of metals.
(Note zinc doesn’t fit very well on either density or melting point.)
Sc
Ti
V
Cr
Mn
Fe
Co
Ni
Cu
Zn
Properties – reactivity
Again it is similarities that stand out rather than differences: they tend to react relatively slowly (e.g.) with air, water and acid.
The general trend is to reduced activity across the Periodic Table but again the trend is far from perfect with zinc in particular being more reactive than you might expect.
General reduced reactivity
Sc
Ti
V
Cr
Mn
Fe
Co
Ni
Cu
Zn
6.unknown
Properties – catalysis
A catalyst is a substance that speeds up a chemical reaction without being used up.
Catalysts are hugely valuable in industry where they can save time and energy.
Many transition elements ( and their compounds) are catalysts.
V
Ti
Uses
The three most commonly known transition elements are iron or steel, copper and zinc.
iron or steel
General engineering metal
© Boardworks Ltd 2003
iron or steel
V
Ti
Fe
Ni
Pair the statement about the transition elements with the words.
The **** elements fit between group 2 and 3.
catalysts
reactive
transition
metals
transition elements?
They are strong.
They are non-conductors.
© Boardworks Ltd 2003
used for?
Plumbing work.
Electrical work
© Boardworks Ltd 2003
Transition elements can speed up other reactions without getting used up in the process.
What do we call substances that do this?
Capitalists
Catalysts
Catholics
Catapults
What colour compound does copper usually form?
Blue
Yellow
Red
Violet
© Boardworks Ltd 2003
How would you describe the reactivity of transition elements within the Periodic Table?
Always more reactive across periods (left to right).
Generally less reactive across periods (left to right).
No change in reactivity.
0
1
2
3
4
5
6
7
8
9
