500 prompts matching "Calculating the nitrogen content of a fertiliser"
Exam practice: The electron configuration of the first twenty elements
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Chemistry at work: How models of the atom developed over time
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Teach me: Energy levels and the filling of electron shells
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Practice set: Writing the electron configuration of a given ion
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Teach me: The assumptions of the kinetic theory
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Explain back: Temperature and the kinetic energy of particles
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Quiz me: The symbols of the common elements
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Explain back: Writing the formula of a compound from valencies
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Calculation practice: Working out the formula mass of a compound
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Teach me: The law of conservation of mass
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Quiz me: The law of constant composition
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Explain back: The law of multiple proportions
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Spot my mistake: Applying the law of multiple proportions to the wrong pair
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Real-life Nigeria: The laws of combination at work in Nigerian industry
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Exam practice: The volume one mole of any gas occupies at s.t.p.
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Quiz me: The graph of pressure against volume
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Practice set: The reactions of acids with metals and with carbonates
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Explain back: The methods of preparing a soluble salt
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Teach me: The composition and structure of water
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Practice set: Hard and soft water, and the causes of hardness
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