Science

12345678910111213
Across
  1. 4. unit of measurement of time
  2. 8. An indivisible and basic unit of matter
  3. 10. blue Litmus Paper turns under acidic conditions
  4. 11. the only metal that is in liquid state at room temperature
  5. 12. The mechanical process to separate solids from the fluids
Down
  1. 1. Positive ions are called
  2. 2. it is the study of matter and the changes it undergoes
  3. 3. It is defined as mass divided by volume
  4. 5. The process through which a substance changes from liquid to solid
  5. 6. Anything that has mass and occupies volume
  6. 7. NH3
  7. 9. The centre of an atom is called
  8. 13. a strong base that dissolves in water