436 prompts matching "Exam practice: Removing permanent hardness by chemical and ion-exchange methods"
Practice set: Making an insoluble salt by mixing two solutions
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Spot my mistake: Confusing temporary hardness with permanent hardness
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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
Practice set: Fertiliser, cement and soap manufacture in Nigeria
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Real-life Nigeria: Siting a chemical plant, and what must be considered
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Practice set: Diffusion, and what it shows about particles
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Exam practice: Brownian motion as evidence for moving particles
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Practice set: Isotopes, and why they exist
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Exam practice: The electron configuration of the first twenty elements
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Practice set: Melting and boiling, and the energy each requires
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Exam practice: Gay-Lussac's law of combining volumes
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Practice set: Converting between mass, moles and number of particles
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Exam practice: The volume one mole of any gas occupies at s.t.p.
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Practice set: The Kelvin scale, and converting to it
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Exam practice: Applying Boyle's law to a described situation
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Practice set: The reactions of acids with metals and with carbonates
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Practice set: Fractional distillation and what it separates
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Exam practice: The laboratory preparation of hydrogen
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Practice set: The properties and uses of oxygen
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Practice set: Acids, bases and salts reviewed
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