Theory
Practice Questions
| 1. |
Law of constant proportions
Difficulty: easy |
2
|
| 2. |
Atomic mass
Difficulty: easy |
1
|
| 3. |
Ions
Difficulty: easy |
2
|
| 4. |
Chemical element symbol representations
Difficulty: medium |
3
|
| 5. |
Classification of molecules: Drag & drop
Difficulty: medium |
6
|
| 6. |
Atomicity
Difficulty: medium |
3
|
| 7. |
Writing chemical formulae of compounds containing polyatomic ions
Difficulty: medium |
2
|
| 8. |
Molecular mass
Difficulty: hard |
2
|
| 9. |
Law of conservation of mass
Difficulty: hard |
5
|