500 prompts matching "Exam practice: The NPK rating and how to read it"
Real-life Nigeria: Graham's law of diffusion and the uses made of it
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Real-life Nigeria: The water cycle and its importance
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Chemistry at work: The laboratory tests for water
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Exam practice: Recording titration readings in a results table
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Chemistry at work: The newer forms of carbon and what they promise
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Real-life Nigeria: Coal mining at Enugu and its history
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Chemistry at work: Carbon black, animal charcoal and their uses
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Real-life Nigeria: Carbonates and hydrogencarbonates and their reactions
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Exam practice: Expressing concentration in moles per cubic decimetre
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Teach me: The rules of safe conduct in a chemistry laboratory
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Exam practice: Measuring mass accurately with a balance
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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
Quiz me: The three states of matter and their particle arrangement
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Explain back: Atomic number and mass number
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Calculation practice: Calculating relative atomic mass from isotopic abundance
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Explain back: Temperature and the kinetic energy of particles
I have just studied temperature and the kinetic energy of particles in my SS1 Chemistry cl
Calculation practice: Working out the formula mass of a compound
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Calculation practice: Calculating the number of particles in a given mass
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Calculation practice: Calculating the volume of a gas at s.t.p.
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Calculation practice: Calculating the volume of gas produced in a reaction
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