Contents
Return after a break
What can you recall?
identify
Recall and explain
Keep the lesson closed. Two elements react to form a compound. Which row describes the compound, and not a mixture of the same two elements?
identify: name or select.
| Row | Its properties | Proportions of its elements | Can be separated into its elements by |
|---|---|---|---|
| A | new, unlike those of its elements | always the same | only a chemical reaction |
| B | new, unlike those of its elements | any proportions | only a chemical reaction |
| C | the same as those of its elements | always the same | only a chemical reaction |
| D | new, unlike those of its elements | always the same | a physical method |
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Scope and sources
Cambridge IGCSE Chemistry 0620 · 2026–2028 v2 · Original learning materials.
The differences between elements, compounds and mixtures (2.1 Core 1), with iron, sulfur and iron sulfide and with particle diagrams. Atomic structure, formulae and equations, separation methods and energy changes as such are left to their own modules.
Apparatus, amounts and times in the experiment are illustrative. Real practical work follows a teacher-approved safety method.
Official Cambridge syllabus