500 prompts matching "Chemistry at work: Plastic waste and the disposal problem in Nigerian cities"
Calculation practice: Checking that an equation balances by counting atoms
Act as my SS1 Chemistry tutor. Walk me through checking that an equation balances by count
Practice set: Ionic equations for precipitation reactions
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Exam practice: Ionic equations for neutralisation
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Spot my mistake: Leaving spectator ions in an ionic equation
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Practice set: Predicting valency from the group number
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Spot my mistake: Placing hydrogen wrongly in the periodic table
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Practice set: Drawing dot-and-cross diagrams for simple molecules
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Exam practice: Coordinate or dative bonding
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Practice set: How structure determines melting and boiling point
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Exam practice: Giant and simple molecular structures compared
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Calculation practice: Predicting relative boiling points from structure
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Exam practice: Converting between Celsius and Kelvin
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Calculation practice: Solving a Boyle's law problem numerically
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Spot my mistake: Using the wrong value of R for the units given
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Practice set: Water as a universal solvent
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Practice set: Removing permanent hardness from water
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Practice set: Measuring pH with paper and with a meter
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Calculation practice: Relating pH to hydrogen ion concentration
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Exam practice: Recording titration readings in a results table
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Spot my mistake: Reading a burette from the wrong part of the meniscus
Act as my SS1 Chemistry tutor. Show me a worked answer on reading a burette from the wrong