Across
- 5. The Centre of an atom is called
- 8. Anything that has mass and occupies volume.
- 9. - It is the study of matter and the changes it undergoes.
- 10. - Blue litmus paper turns____under acidic conditions.
- 11. - The mechanical process to separate solids from the fluids.
Down
- 1. - NH 3 - Chemical Name.
- 2. - It is defined as mass divided by volume.
- 3. An indivisible and basic unit of matter.
- 4. The process through which a substance changes from liquid to solid.
- 6. - Unit of measurement of time.
- 7. - The only metal that is in liquid form at room temperature.
- 9. -Positive ions are called