Here's the grid you'll complete for every demonstration. Let's model one row together using melting butter.
| Column | What goes here | Example (melting butter) |
|---|---|---|
| Observation | Detailed, sensory description | Solid butter turned to clear liquid when heated |
| Classification | Reversible or irreversible | Reversible |
| New substance? | Yes/no + how you can tell | No — cooling turns it solid again |
| Risk | One safety risk + how to reduce it | Hot surface — use a heat mat, don't touch |