Across
- 7. : Deals with the calculation of masses of the products and reactants involved in a reaction.
- 8. : Mass of one mole of a substance in grams.
- 12. : Uniform composition (Sugar solution, air).
- 13. : Neither have definite volume nor definite shape.
- 14. : Non-uniform composition(Mixtures of salt and sugar.)
- 15. : Equal voume of gases at the same temperature and pressure should contain equal number of molecules.
Down
- 1. : Discovery of electron .
- 2. :Particles are close and can move around.
- 3. : Atoms of different elements with different atomic number but same mass number.
- 4. : Possesses a spherical shape in which the positive charge is uniformly distributed.
- 5. : Number of protons in nucleus of an atom or Number of electrons in a neutral atom.
- 6. :It is like photographic negative of an emission spectra.
- 9. : Have definite volume and shape.
- 10. : Discovery of neuton.
- 11. : spectrum of radiation emitted by a substance that has absorbed energy.