Material questions often supply the data and ask you to decide. This set trains four reasoning moves that work on any supplied table.
It extends industrial chemistry, which teaches the knowledge. Here you practise using evidence that the question gives you.
What does this area cover?
There are four lessons and a practice set. You choose a material with explicit criteria, explain a trade-off, connect a model of a material to a measured property, and evaluate a fictional product claim.
How do the parts connect?
Each move adds a layer to the one before it.
| Lesson | Move | What it adds |
|---|---|---|
| Choosing with criteria | Name the need first | A defensible choice |
| Explaining a trade-off | Show what is given up | A fair comparison |
| Model to measurement | Link structure to data | An explanation with evidence |
| Product claim | Test the claim | A cautious conclusion |
The integrated practice set mixes all four moves.
A short orienting example
A table supplies two fictional materials. Material K has a mass of 2 g per cm³ and withstands 300°C. Material L has a mass of 5 g per cm³ and withstands 900°C.
A handle for a hot pan must survive 500°C. Material K fails this test, because 300°C is below 500°C. Material L passes, because 900°C is above it, even though it is heavier.
The reasoning starts with the need, survives 500°C, not with the material. The mass is a cost of the choice, and a full answer mentions it.
Who should start where?
If you choose materials by feel, start with the first lesson. If you already use criteria but your comparisons are one-sided, start with the second. Use the claim evidence revision desk to tidy the wording of your answers.
To work through these moves with a teacher, see online one-to-one Science tuition.