All Ions articles – Page 3
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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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ResourceIonic Su Doku
This activity gives students practice at working out formulae in a problem solving context.
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Resource28 chemistry puzzles for 14-16 years
Use these sudoku-inspired puzzles with printable worksheets and answers to help 14–16 year olds consolidate their understanding of key chemical concepts.
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Resource45 chemistry puzzles for 16-18 years
Try these chemistry puzzles based on sudoku to help 16–18 year old students consolidate their knowledge about key topics, with printable worksheets and answers.
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Lesson planHow do atoms form the ions in ionic compounds? | 16-18 years
Check students’ understanding of why atoms form ions, and how ionic compounds form by ionic bonding, using this lesson plan with activities for 16–18 year olds.
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