Everything around you is one of three things — an element, a compound, or a mixture. Six lessons, six labs, one chapter map, and thirty questions.
The chapter asks four questions in turn — why composition matters, what elements and compounds are, what mixtures are, and how to tell all three apart. But every one of them comes back to a single sorting decision:
Get that decision right and the rest — solutions, suspensions, the air, steel, seawater — are just examples of the third box.
This is scoped for G3. The textbook marks Solubility as optional for G2; for you it is core, and it is the part most likely to be examined precisely because it is the part people skip.
The 118 building blocks, the Periodic Table, metals and non-metals — with an explorer you can click through.
Start → Lesson 3Chemically combined, fixed proportions, new properties, hard to separate — seen at the particle level.
Start →Air, steel, seawater, milk. Build your own mixture and see what kind it is.
Start → Lesson 5Solute and solvent, dilute and concentrated, how fast versus how much. Two labs.
Start → Lesson 6The torch test, the settling test, and Table 3.3 — the three questions that separate element, compound and mixture.
Start →Every definition, all three comparison tables, the composition of air and the factors lists.
Open → PracticeSorting, labelling particle diagrams, typed answers, structured questions — every wrong answer explains itself.
Practice → Challenging · Lvl 2Twenty harder questions with the options set deliberately close together — only correct reasoning separates them.
Take it on →