447 prompts matching "Adding excess reagent too early and losing a precipitate"
Practice set: Diffusion, and what it shows about particles
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Teach me: The atom and the particles inside it
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Quiz me: The proton, the neutron and the electron compared
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Practice set: Isotopes, and why they exist
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Real-life Nigeria: Isotopes in Nigerian medicine and agriculture
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Teach me: Energy levels and the filling of electron shells
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Quiz me: Valency, and how it is worked out from configuration
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Exam practice: The relation between configuration and position in the periodic table
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Practice set: Melting and boiling, and the energy each requires
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Exam practice: Sublimation and the substances that show it
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Real-life Nigeria: The kinetic theory in Nigerian cooking and drying
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Teach me: Chemical symbols and where they come from
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Exam practice: Writing and balancing a chemical equation
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Teach me: What a mole is, and why chemists use it
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Quiz me: Avogadro's number and what it counts
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Practice set: Converting between mass, moles and number of particles
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Exam practice: Naming acids and the salts derived from them
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Chemistry at work: Why systematic naming matters in trade and medicine
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Practice set: The Kelvin scale, and converting to it
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Real-life Nigeria: The gas laws in Nigerian diving and gas cylinders
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