All Reactions and synthesis articles – Page 8
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NewsSolar-powered desalination produces energy
Nanocomposite helps to produce drinking water and fuel
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Resource
Six solutions
Devise experiments to label six numbered solutions correctly using chemicals and apparatus in the laboratory.
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Hydrogen peroxide
Find the best catalyst for the decomposition of hydrogen peroxide from solutions provided.
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Three white solids
Devise experiments to label three white solids correctly by using chemicals and apparatus in the laboratory.
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What compound?
Identify a given solid; make a list of all of the compounds the solid could be, suggest as many ways as possible of identifying the solid and use this information to devise an analytical procedure; use this procedure to identify the solid.
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Four solutions
Devise experiments to label some bottles correctly, using two different approaches.
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Which set of ionic compounds?
Devise a procedure to identify four solids and then use this to carry out the identification.
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Find the chloride
Devise experiments to determine which of five solids is the chloride by using chemicals and apparatus in the laboratory.
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Detergency
Explain two observations related to the production of a jelly-like solid when two detergents were used in combination.
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Cobalt complexes
Devise structures for cobalt complexes given, decide how to distinguish between the four complexes, and identify some properties or characteristics that are the same for all four complexes.
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Carbon and copper oxide
Two unnamed black solids are known to be either copper(II) oxide or carbon. Devise three or more methods of labelling them correctly using chemicals and apparatus in the laboratory, test each method and compare them to decide which is best.
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Amount of CO₂
By using chemicals and apparatus in the laboratory, devise experiments to determine the amount of carbon dioxide that can be obtained from a mixture of two solids - barium sulphate and potassium carbonate.
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Aluminium foil
Find out which salt or ion, from a selection provided, is the best catalyst for the reaction between aluminium and dilute hydrochloric acid.
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A black solid
Devise experiments to identify a black solid sample by using chemicals and apparatus in the laboratory.
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Five white solids
Label five white solids correctly by using chemical tests and any suitable apparatus.
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Experiment
Exploding bubbles of hydrogen and oxygen
Create a small explosion in this demonstration by electrolysing water to produce hydrogen and oxygen bubbles. Includes kit list, video and safety instructions.
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Experiment
Cracking hydrocarbons in liquid paraffin with a catalyst
Model the industrial process of cracking larger hydrocarbons to produce smaller alkanes in this demonstration or class practical. Includes kit list and safety instructions.
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Experiment
Iron and sulfur reaction
This demonstration or class experiment shows the exothermic reaction of iron and sulphur. Includes kit list and safety instructions.
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Experiment
Turning ‘red wine’ into ‘water’
Use acidified potassium permanganate – or ‘red wine’ – to make ‘water’, ‘milk’ and ‘lemonade’ in this engaging demonstration. Includes kit list and safety instructions.
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Experiment
Heating Group 1 metals in air and in chlorine
Use this demonstration to illustrate the reactions of lithium, sodium and potassium in air and in chlorine. Includes kit list, video and safety instructions.
