with-sandpaper
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| Why do we rub the magnesium ribbon with a sandpaper before burning it? |
|
1 | 1766 | June 27, 2019 |
| Topic | Replies | Views | Activity | |
|---|---|---|---|---|
| Why do we rub the magnesium ribbon with a sandpaper before burning it? |
|
1 | 1766 | June 27, 2019 |