All Resource articles – Page 20
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Resource3D crystal structures
These resources cover a range of topics that require the use of 3D structures of molecules and complexes. They can be viewed using the Cambridge Crystallographic Data Centre’s WebCSD Free Teaching Subset, which is free to access online without a CSD licence.
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Problem solving tutor
Use this online interactive tutorial to teach three different methods for solving problems in quantitative chemistry. Video: How to use the problem solving tutor
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The effect of temperature on solubility
Examine why some solid substances are more soluble in hot water than in cold water
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Particles in motion?
Prove that gas particles are not static by generating carbon dioxide in the reaction calcium carbonate and hydrochloric acid and performing the limewater test in the test tube that has been held over the reaction test tube
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The reactivity of the group 2 metals
React magnesium and calcium with hydrochloric acid to find out which is the most reactive: group 1 or group 2 metals
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The electrolysis of solutions
Find out what happens when electricity passes through molten compounds… with water present
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The volume of 1 mole of hydrogen gas
Calculate the volume of one mole of hydrogen at room temperature and pressure by reacting magnesium with hydrochloric acid
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The effect of temperature on reaction rate
Investigate the effect of temperature on the rate of reaction between sodium thiosulfate and hydrochloric acid to better understand basic collision theory
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The effect of concentration and temperature on reaction rate
Explore the effect that concentration and temperature have on the reaction time of chemicals with this experiment in kinetics
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Reacting elements with oxygen
Many elements react with oxygen on heating. These reactions and the properties of their products illustrate the periodic nature of the elements.
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An effervescent Universal indicator ‘rainbow’
Sodium carbonate solution is added to a burette containing a little hydrochloric acid and Universal Indicator. The two solutions react, with effervescence, and the liquid in the burette shows a ‘rainbow’ of all the colours of Universal Indicator from red through orange, yellow, green and blue to purple.
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The reaction of magnesium with steam
Plunge a burning magnesium ribbon into the steam above boiling water and allow the hydrogen that is formed to burn – or collect it over water and test it with a lighted spill.
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The reaction between zinc powder and sulfur
Spectacular demonstration to show the differences between elements, mixtures and compounds
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Making a reaction tube
Many reactions between gases and solids are suitable for demonstrations and class practicals. Making reaction tubes is an excellent lesson in physical chemistry in its own right as well as being cheaper than buying in expensive material.
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Properties of the transition metals and their compounds
Extend your students’ knowledge of the Periodic Table by examining the transition metals and their compounds
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Disappearing ink
Learn about acid/base reactions as sodium hydroxide reacts with gas in the air to produce a solution that appears to disappear!
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Testing salts for anions and cations
Learn how to identify the composition of unknown substances
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