Across
- 2. Paper chromatography is a method to test the __________ of substances.
- 4. The attraction between the lattice of positive ions and the 'sea of delocalised and mobile electrons'.
- 6. Separate reactions of base, alkali, carbonates, metal with acids all produce _____________.
- 9. Ionic compounds and metals all have a ___________ structure.
- 10. This is one of the two factors that affect the rate of diffusion.
- 11. Liquids that are able to mix with each other.
- 13. The method to obtain sodium chloride from its solution.
Down
- 1. Diamond, graphite and silicon dioxide are examples of covalent substances with __________________________.
- 3. The difference between simple distillation and fractional distillation.
- 5. Deuterium and tritium are ____________ of hydrogen.
- 7. The reason why you can smell garbage on the 1st floor from the 10th floor.
- 8. The nucleon number of an atom is also known as _______________________.
- 12. Another name for the strong electrostatic forces of attraction between oppositely-charged ions.