252 prompts matching "Calculating enthalpy change from enthalpies of formation"
Exam practice: Isotopy, with examples of isotopes
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Spot my mistake: Thinking isotopes of an element react differently
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Project task: Building a chart of the first twenty atoms
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Chemistry at work: The historical models of the atom compared
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Practice set: Valency deduced from electron configuration
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Calculation practice: Deducing valency from a given configuration
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Chemistry at work: Electron configuration and the design of new materials
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Calculation practice: Working out relative molecular mass from a formula
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Project task: Making a reference card of symbols and radicals
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Explain back: The state symbols and what each of them means
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Practice set: Writing an equation from a described reaction
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Explain back: Writing an ionic equation from a full equation
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Project task: Converting a set of full equations into ionic form
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Teach me: The arrangement of the modern periodic table
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Practice set: Predicting valency from the group number
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Exam practice: The properties of Group 1, Group 7 and Group 0
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Explain back: Covalent bonding and the sharing of electrons
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Calculation practice: Predicting a compound's formula from the bonding type
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Chemistry at work: Metallic bonding and the sea of electrons
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Calculation practice: Predicting relative boiling points from structure
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