1. Lighting up copper demonstration of the properties of transition metals
September 2016
rsc.li/EiC516ec

2. variable oxidation states
coloured compounds
variable oxidation states
catalytic activity
magnetic properties
complex ion formation
Transition
Metals
Magnetic properties:
Complex ion formation:
Coloured compounds:
Variable oxidation states (top):
Variable oxidation states (bottom):
Catalytic activity (top):
Catalytic activity (bottom):

3. NurdRage: https://www.youtube.com/channel/UCIgKGGJkt1MrNmhq3vRibYA

4. chemical reactions normally release or absorb heat energy
reactants
energy DH
products
sometimes more energy is released as light
Luminol demonstration:

5. some reactions release energy as light: chemiluminescence
Transitions between electronic energy levels
visible or UV light
energy

6. 5-amino-2,3-dihydro-1,4-phthalazinedioneC H O
Luminol
5-amino-2,3-dihydro-1,4-phthalazinedione
Structure: By Jynto [CC0], via Wikimedia Commons

7. oxidising agent
hydrogen peroxide
catalyst
copper(II) ions
alkali
ammonia

8. The reaction is an oxidation
excited molecule

9. oxidising agent
hydrogen peroxide
catalyst
copper(II) ions
alkali
ammonia

10. [Cu(H2O)6]2+
Cu2+
[Cu(NH3)4(H2O)2]2+

11. big jump after 1st IE big jump after 7th IE only +1 oxidation state
many oxidation states!
Oxidation states: By No machine-readable author provided. Felix Wan assumed (based on copyright claims). [GFDL ( CC-BY-SA-3.0 ( or CC BY-SA 2.5 ( via Wikimedia Commons

12. ethylenediaminetetraacetic acid
polydentate ligand
EDTA
ethylenediaminetetraacetic acid
NurdRage:

13. chelation More particles on the right: entropy of system increases
favoured by entropy
More particles on the right: entropy of system increases
[Cu(NH3)3(H2O)2OH]+ + EDTA4- → [Cu(EDTA)]2- + 2H2O + OH- + 3NH3 1 2 1 2 3 4 5 6 7

14. MRI contrast agents
Brain scan: User-fastfission-brain.gif CC BY SA 3.0
MRI machine: By Jan Ainali (Own work) [CC BY 3.0 ( via Wikimedia Commons

15. variable oxidation states
coloured compounds
variable oxidation states
catalytic activity
magnetic properties
complex ion formation
TRANSITION
METALS
NurdRage
Video:

16. Lighting up copper demonstration of the properties of transition metals
September 2016
rsc.li/EiC516ec