Term 1 Week 3 · Can You Get It Back? · CG Quarter 1, competency 3
| # | The misconception | Where it shows | What to do |
|---|---|---|---|
| 1 | Burning is reversible — the ash is still there | §C2, game Round 1 | Ask them to write on the ash. Ash is one of the fire's products, not the paper |
| 2 | Dissolving is irreversible — the sugar disappeared | §C2, exit ticket 1 | The saucer on the windowsill. Do not argue on Monday; wait for Friday and let the salt argue |
| 3 | Any colour change means a chemical change | Worksheet A | Mixing blue and yellow paint makes green and nothing new was made. The sign is a colour change that will not wash off or separate |
| 4 | Melting and dissolving are the same thing | Worksheet B | Melting needs heat and involves one material. Dissolving needs a second material and happens at room temperature |
| 5 | If I cannot undo it, it is chemical | §C3, exit ticket 3 | The shattered glass. This is the lesson's diagnostic and it is not carelessness — it is a good rule meeting its edge |
| 6 | Cooking is physical because it is just heat | §D | Heat is the cause. The test is the product: fried egg cannot be returned to raw, and it smells different, which is a new material reaching the nose |
| 7 | Reversible means easy | §C3 | Melting an iron bar back into shape is reversible and needs a foundry. Reversible is about whether the material survived, not about effort |