500 prompts matching "What hardness is, and what causes it"
Real-life Nigeria: Graphite in Nigerian pencils and electrodes
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Spot my mistake: Confusing coal with coke in a question
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Practice set: Carbon monoxide, its preparation and its danger
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Practice set: The alkane series and the formula that generates it
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Spot my mistake: Confusing solubility with the rate of dissolving
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Practice set: Measuring volume accurately with a pipette and a burette
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Exam practice: The links between chemistry and the other sciences
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Practice set: Fertiliser, cement and soap manufacture in Nigeria
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Practice set: Isotopes, and why they exist
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Exam practice: Identifying the oxidising and the reducing agent in a reaction
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Exam practice: Heat of reaction, of neutralisation and of combustion
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Practice set: Drugs and medicines and their chemical basis
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Exam practice: Fertilisers and their effect on crop yield
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Exam practice: Ionisation and the formation of cations and anions
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Chemistry at work: The careers that a study of chemistry opens
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Teach me: What a chemical industry does
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Explain back: Petrochemicals and the refining of crude oil
I have just studied petrochemicals and the refining of crude oil in my SS1 Chemistry class
Explain back: Changes of state and the names given to them
I have just studied changes of state and the names given to them in my SS1 Chemistry class
Explain back: Atomic number and mass number
I have just studied atomic number and mass number in my SS1 Chemistry class. Let me explai
Chemistry at work: How models of the atom developed over time
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