Across
- 2. Understood by Greeks but was formulated by Antoine Lavoisier.
- 6. Two solutions of salts are mixed to form solid.
- 10. Is electrostatic attraction between opposite ions.
- 15. Involves loss of electrons.
- 17. Is the sum of the relative atomic masses.
- 18. Oxygen combines with a compound to form carbon dioxide and water.
- 19. The unit of amount of substance.
- 22. One element takes place with another element.
Down
- 1. Is used for ionic compounds.
- 3. The average mass of isotopes.
- 4. Two or more compounds combine to form one compound.
- 5. A complex molecule breaks down to make simpler ones.
- 7. An acid and base react with each other.
- 8. The volume of gas contain 1 mole 6.02×10^23.
- 9. Involves gain of electrons.
- 11. Contains many atoms joined by strong covalent bonds.
- 12. Structures simple and formed only a few atoms.
- 13. Is measured in g/dm^3.
- 14. Involve oxidation and reduction.
- 16. Number and type of atoms in a molecule.
- 20. Negative electrons attract positive metal ions bond with strong electrostatic forces.
- 21. Occurs between non-metal atoms and the bond.