17 results found for chemistry

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00:42:00

Atmospheric Chemistry

by Sherwood Rowland
Atmospheric Chemistry
for 14-19 and upwards,
Interviews | 14-19 and upwards | 15 years ago | 2261 views
Rating:

In this interview Sherwood Rowland talks about Ozone depletion and the effect of CFCs on Ozone and Global Warming (Greenhouse Warming where infrared radiation is trapped). He explains the chemistry of Ozone depletion and the history of what led to th....

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00:12:00

Carbon Sequestration

by Kyle Serniak
Carbon Sequestration
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 2719 views
Rating:

Why is carbon sequestration so important?

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00:33:00

Chemical Equations – and how we construct them

by Colin Byfleet
Chemical Equations – and how we construct them
for 14-19 and upwards,
Teaching modules | 14-19 and upwards | 15 years ago | 2103 views
Rating:

An introduction into the writing down of fully balanced chemical equations. The process is explained starting with word equations, finding all the relevant formulas and then working with some useful rules for finding the correct coefficients in the b....

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00:40:00

Conductive Polymers

by Alan Heeger
Conductive Polymers
for 18-22 and upwards,
Interviews | 18-22 and upwards | 15 years ago | 3335 views
Rating:

Heeger says that he started as a physicist and thinks like a physicist but got interested in the late 70's in the study of materials. For him it was a natural evolution to move to polymers and in 1975 he began working with Alan MacDiarmid and became ....

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00:26:00

Constructing Chemical Formulas

by Colin Byfleet
Constructing Chemical Formulas
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 18540 views
Rating:

An introduction to constructing and recognising chemical formulas. Using 20 well-known elements, the valency-rules which govern the atomic ratios are explained and used with several examples.

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00:11:00

Energy Challenges: Power from Hydrogen

by Jeff Whalen
Energy Challenges: Power from Hydrogen
for 18-22 and upwards,
Postgraduate presentations | 18-22 and upwards | 15 years ago | 1981 views
Rating:

We are faced with energy challenges and the promise of power with hydrogen. The fuel cell and solid state hydrogen storage methodologies are currently limited by materials and represent the cutting edge of energy technology. Implementation to a real ....

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00:03:00

Manchester United

by Harry Kroto
Manchester United
for 11-14 and upwards,
Workshops | 11-14 and upwards | 15 years ago | 8096 views
Rating:

A workshop in Chemistry at Old Trafford.

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00:30:00

Metal Flux Synthesis Media for Magnetic Compounds

by Susan Latturner
Metal Flux Synthesis Media for Magnetic Compounds
for 22 and upwards,
Lectures | 22 and upwards | 13 years ago | 2036 views
Rating:

Early rare earth metals (La, Ce, Pr, Nd) combined with late first row transition metals (Fe, Co, Ni) can produce low melting eutectic mixtures. For instance, a 75:25 mole percent mixture of La and Ni forms a eutectic that melts at 532 õC. We are inv....

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00:08:00

Organometallic uranium chemistry: small molecule activation

by Jessica Higgins
Organometallic uranium chemistry: small molecule activation
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 4427 views
Rating:

Jess gives a lively account of her work which involves the study of how uranium organ-metallics can catalyse unusual and useful reactions.  She is a PhD student at the University of Sussex, UK.

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00:37:00

Oxidation Numbers and Equations

by Colin Byfleet
Oxidation Numbers and Equations
for 14-19 and upwards,
Teaching modules | 14-19 and upwards | 15 years ago | 2696 views
Rating:

The concept of oxidation and reduction is explained and generalised using oxidation numbers with ionic and covalent examples. Several equations are balanced, using the oxidation number method to fix various atomic ratios.

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00:20:00

Suzuki Coupling Reactions

by Akira Suzuki
Suzuki Coupling Reactions
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 3101 views
Rating:

The discoverer of these really useful reactions talks about their discovery and development.

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00:07:00

Synthesis of Stable, Water Soluble Gold Colloids

by Layal L Rouhana
Synthesis of Stable, Water Soluble Gold Colloids
for 22 and upwards,
Lectures | 22 and upwards | 16 years ago | 2471 views
Rating:

Ligand exchange reactions were utilized in the production of aggregation-resistant gold nanoparticles, having an average diameter of 5 nm, comprising a gold core capped with a mixed shell of citrate and zwitterionic ligands. The prepared nanoparticl....

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