All Ions articles – Page 3
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Ideas5 ffordd o egluro electrolysis
O adeiladu sylfeini da i gofio’r rheolau, bydd yr awgrymiadau hyn yn helpu eich myfyrwyr i ddeall y pwnc anodd hwn
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NewsA step closer to post-lithium energy storage
Calcium batteries could be viable thanks to a new electrolyte
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Class experimentPrecipitation reactions of lead nitrate
Compare the colours of various lead compounds to identify which would be good pigments in this microscale practical. Includes kit list and safety instructions.
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Class experimentUsing a microscale conductivity meter
Explore electrical conductivity with this practical that allows students to test different materials for how well a current will pass through them. Includes kit list and safety instructions.
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Class experimentElectrolysis of potassium iodide solution
Find out how the electrolysis of a potassium iodide solution works with this practical. Includes kit list, and safety instructions.
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ResourceChallenging Plants: Soil Science - Practicals
The nature of soil particles (inorganic and organic) and of soil water affects plant growth and, in particular, the availability of nutrients essential for the growth of quality crops in high yield. An understanding of the media in which plants grow helps scientists to exploit their potential.
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Lesson planThe salt cellar mystery
Support learners to investigate using chemistry, with the salt cellar mystery. Includes kit list, safety instructions and session timings
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ResourceIon-exchange resin and water
Evaluate the advantages and disadvantages of a selection of resins and decide which one(s) would be best for producing pure water from seawater on a life raft.
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ResourceJets of liquids: the effect of charged plastic on water
Polar covalent bonds, and their affects on water are explored in this open-ended problem.
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ResourceWhat compound? Identify and analyse
Learners can devise their own testing system to identify the nature of a mystery compound.
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ResourceWhich detergent is best?
Explain two observations related to the production of a jelly-like solid when two detergents were used in combination.
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Class experimentInvestigating the solubility of lead halides
Encourage students to make and test predictions about the pattern of solubility among lead halides in this practical. Includes kit list and safety instructions.
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Class experimentSolubility trends of metal halides
Investigate patterns in the solubility of halides of silver and some Group 1 and 2 metals in this microscale practical. Includes kit list and safety instructions.
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Class experimentWhat ions cause hardness in water?
Investigate how different cations and anions in dissolved salts affect the formation of a lather in this experiment. Includes kit list and safety instructions.
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DemonstrationWhat are the dissolved solids in seawater?
Analyse the salts that crystallise from evaporating seawater, illustrating cation and anion tests in this demonstration. Includes kit list and safety instructions.
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Class experimentMicroscale reactions of positive ions with sodium hydroxide
Try this microscale practical exploring the reactions of various positive ions with sodium hydroxide. Includes kit list and safety instructions.
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Class experimentPreferential discharge of cations during electrolysis
Use this practical to show that metal cations are preferentially discharged, in relation to the metal’s position in the reactivity series. Includes kit list and safety instructions.
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Class experimentThe migration of ions during electrolysis of potassium manganate(VII)
Try this class practical to investigate the migration of ions during electrolysis as evidence for the ionic model. Includes kit list and safety instructions.
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DemonstrationExtracting iodine from seaweed
Discover how ribbon seaweed (or kelp) can be used as a source of iodine in this demonstration or class experiment. Includes kit list and safety instructions.
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