Question 17
Materials: Three test tubes, water, iron nail, plastic nail, coated nail.
1. Work in pairs or small groups.
2. Half-fill three test tubes with water.
3. Put a different nail (an iron nail, a plastic nail and a coated nail) into each test tube.
4. Label each test tube.
5. Leave the nails in the water for 1 week.
6. Observe daily and note any changes.
What changes did you see after 1 week?
| Day | Iron nail | Plastic nail | Coated nail |
|:-:|:-|:-|:-|
| 1 | ___ | ___ | ___ |
| 2 | ___ | ___ | ___ |
| 3 | ___ | ___ | ___ |
| 4 | ___ | ___ | ___ |
| 5 | ___ | ___ | ___ |
| 6 | ___ | ___ | ___ |
| 7 | ___ | ___ | ___ |
1. Work in pairs or small groups.
2. Half-fill three test tubes with water.
3. Put a different nail (an iron nail, a plastic nail and a coated nail) into each test tube.
4. Label each test tube.
5. Leave the nails in the water for 1 week.
6. Observe daily and note any changes.
What changes did you see after 1 week?
| Day | Iron nail | Plastic nail | Coated nail |
|:-:|:-|:-|:-|
| 1 | ___ | ___ | ___ |
| 2 | ___ | ___ | ___ |
| 3 | ___ | ___ | ___ |
| 4 | ___ | ___ | ___ |
| 5 | ___ | ___ | ___ |
| 6 | ___ | ___ | ___ |
| 7 | ___ | ___ | ___ |
