All Energy articles – Page 4
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ResourceCombustion of hydrogen in air
In this experiment hydrogen is burnt with some air. The aim of the experiment is to find out how much air is needed to burn hydrogen most efficiently.
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Exothermic metal displacement reactions
Students add powdered metals to a copper(II) sulfate solution and measure the temperature rises.
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Supercooling - the energetics of freezing
Students melt sodium thiosulfate crystals, and these are then cooled to a state well below the melting point. The supercooled liquid will freeze rapidly on the addition of a crystal of sodium thiosulfate, or on stirring which seeds the crystallisation process. Temperature changes are observed throughout.
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Fat-pan fire!
The context of a fat-pan (chip-pan) catching fire is used to demonstrate the conditions required to start combustion, and how to put such a fire out safely.
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Exothermic metal-acid reactions
Students add powdered or finely-divided metals to hydrochloric acid and measure the temperature changes.
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Heat energy from alcohols
This experiment compares the amounts of heat energy produced by burning various alcohols.
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The second law of thermodynamics
This activity aims to introduce the topic in a way that uses the students’ synthesis skills to piece together several pieces of information.
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The alcohol gun
Illustrate the large energy changes that take place during the combustion of alcohols with this spectacular demonstration.
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Move a heavy object
Design and make a device to move the heaviest possible object at least 10 cm on a flat surface.
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Design a pocket handwarmer
Design and make a rechargeable handwarmer which, when it is needed, can be set off to provide a steady supply of heat at a comfortable temperature
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Atmospheric chemistry by danceroom Spectroscopy (dS)
A series of short videos presented by Dr David Glowacki within an interactive dome called danceroom Spectroscopy (dS).
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Energy
Knowledge of energetics can help understand the process of a reaction and the conditions under which it operates. It also develops knowledge of the link between individual bond energies and the net energy gain or loss as well as the realisation that energy is not just heat. This programme is ...
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The Mole
Matt Green: Graduate chemical engineer at Atkins
Chemistry doesn’t stop until you reach the final product. Daniel Johnson talks to Matt Green about life as a chemical engineer
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The Chemistry of Light: Part 3
A series of short experiments and demonstrations about the chemistry of light, taken from a lecture by Peter Wothers from the University of Cambridge Video: The Chemistry of Light: 21 - Colouration of Flames Video: The Chemistry of Light: 22 ...
