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

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

variable oxidation states coloured compounds variable oxidation states catalytic activity magnetic properties complex ion formation Transition Metals Magnetic properties: https://youtu.be/Hh2vA0vVijQ?t=7m29s Complex ion formation: http://bit.ly/2anb2Jv Coloured compounds: http://bit.ly/2ajFeYA Variable oxidation states (top): http://bit.ly/2awlyAj Variable oxidation states (bottom): http://bit.ly/2aiMAIM Catalytic activity (top): http://bit.ly/2aAcLPc Catalytic activity (bottom): http://bit.ly/2a9Orjs

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

chemical reactions normally release or absorb heat energy reactants energy DH products sometimes more energy is released as light Luminol demonstration: http://bit.ly/2ajHaAa

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

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

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

The reaction is an oxidation excited molecule

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

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

big jump after 1st IE big jump after 7th IE only +1 oxidation state many oxidation states! Oxidation states: https://commons.wikimedia.org/wiki/File%3ATransition_metal_oxidation_states_2.png By No machine-readable author provided. Felix Wan assumed (based on copyright claims). [GFDL (http://www.gnu.org/copyleft/fdl.html), CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/) or CC BY-SA 2.5 (http://creativecommons.org/licenses/by-sa/2.5)], via Wikimedia Commons

ethylenediaminetetraacetic acid polydentate ligand EDTA ethylenediaminetetraacetic acid NurdRage: https://youtu.be/CQ4145kogvY https://youtu.be/CQ4145kogvY

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

MRI contrast agents Brain scan: User-fastfission-brain.gif CC BY SA 3.0 https://commons.wikimedia.org/wiki/File:User-FastFission-brain.gif MRI machine: https://commons.wikimedia.org/wiki/File%3AMRI-Philips.JPG By Jan Ainali (Own work) [CC BY 3.0 (http://creativecommons.org/licenses/by/3.0)], via Wikimedia Commons

variable oxidation states coloured compounds variable oxidation states catalytic activity magnetic properties complex ion formation TRANSITION METALS NurdRage Video: https://youtu.be/VDMgrgSVjd8

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