Stoichiometry topic check · H1 Chemistry 8873
Check what you know about H1 Chemistry Stoichiometry, practise what needs work, then check your progress and come back for a later review.
Learning objectives
- define the terms relative atomic, isotopic, molecular and formula mass
- define the term mole in terms of the Avogadro constant
- calculate the relative atomic mass of an element given the relative abundances of its isotopes
- define the terms empirical and molecular formula
- calculate empirical and molecular formulae using combustion data or composition by mass
- write and/or construct balanced equations
- describe and explain redox processes in terms of electron transfer and/or of changes in oxidation number (oxidation state) as exemplified by Fe3+/Fe2+ and MnO-4 /Mn2+
- construct redox equations using the relevant half-equations
- perform calculations, including use of the mole concept, involving: — reacting masses (from formulae and equations)
- perform calculations, including use of the mole concept, involving: — volumes of gases (e.g. in the burning of hydrocarbons)
- perform calculations, including use of the mole concept, involving: — volumes and concentrations of solutions [when performing calculations, candidates’ answers should reflect the number of significant figures given or asked for in the question]
- deduce stoichiometric relationships from calculations such as those in (i)
Your next step
Check what I know
Start with a check of what you already know. Answer each question and say how sure you are. We'll use this to suggest what to practise next.
Finding your next step…
Check what I know
Start here to see which parts you already know.
About 8 minutes
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Answer 10 short questions. It shows what to work on next and doesn't count towards course progress.
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Beyond the syllabus: optional enrichment that does not count towards your progress.
Practise
Work through questions with marking and feedback as you learn.
About 10 minutes
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Questions are picked at random each time you start. You'll see the answer after each question. It's for practice only and doesn't count towards course progress.
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Beyond the syllabus: optional enrichment that does not count towards your progress.
Practise after feedback
After a check, practise the skills it showed you need to work on.
About 10 minutes
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Questions are picked at random each time you start. You'll see the answer after each question. It's for practice only and doesn't count towards course progress.
Getting your questions…
Recent attempts
History is stored only in this browser.
No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
Check my progress
When you feel ready, answer on your own to show what you can do.
About 10 minutes
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Answer 10 questions. You'll see your score, the answers and explanations at the end. Your result can count towards your course progress.
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Recent attempts
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No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
Check again
After practising what your progress check showed, check those skills again.
About 10 minutes
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Answer 10 questions. You'll see your score, the answers and explanations at the end. Your result can count towards your course progress.
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Recent attempts
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No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
Review
Come back later to see whether your learning has lasted.
About 10 minutes
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Answer 10 questions. You'll see your score, the answers and explanations at the end. A scheduled review counts towards your course progress only when it is due.
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Recent attempts
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No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
Practise: multiple-choice
Work through questions with marking and feedback as you learn.
About 10 minutes
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Questions are picked at random each time you start. You'll see the answer after each question. It's for practice only and doesn't count towards course progress.
Getting your questions…
Recent attempts
History is stored only in this browser.
No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
Practise: written
Work through questions with marking and feedback as you learn.
About 10 minutes
Checking question availability…
Time is up, but your answers have not been submitted yet. Check your connection and try again.
Questions are picked at random each time you start. You'll see the answer after each question. It's for practice only and doesn't count towards course progress.
Getting your questions…
Recent attempts
History is stored only in this browser.
No completed attempts are saved yet.
Beyond the syllabus: optional enrichment that does not count towards your progress.
Next step