Use of Activity-Based Method to Evaluate the Teaching and Learning of Redox Reactions among Senior High School Students
Table 4.
Students’ reasons for writing theions present in molten alumina and lead trinitrate (V) solution incorrectly.
|
| Ions present in: |
Reasons |
Number of students |
|
|
| (a) Al2+, O3- |
aluminium has lost 2 electrons and oxygen has gained 3 electrons in the compound |
2 |
|
| Al23+, O 2 |
there are 2 aluminium atoms and they lost 3 electrons and there are 3 oxygen atoms and they gained 2 electrons |
3 |
|
| Pb2+, NO32- |
there are 2 lead atoms in the compound |
1 |
|
|
|
|
