Across
- 4. Last name who introduced triad method
- 8. Negative ions.
- 10. Electrons occupy lower energy principle
- 12. Single electron.
- 13. ___ = Degree celsius + 273
- 14. Contains single component.
- 18. Elements in group 8 of the periodic table.
- 19. Same element with different number of neutrons.
- 20. Neutral subatomic particle.
- 21. Sharing between two non metals.
- 22. Amount of matter in an object.
- 24. Study of matter its composition and properties.
- 25. Block consist of transition metals.
- 26. Negatively charged subatomic particle.
- 28. Good conductors of heat.
- 29. Number of orbitals.
- 30. Uniform system of units for the sciences.
Down
- 1. Composed of anions and cations.
- 2. Indicates number of electron shells or rings.
- 3. Measurement used in determining the coldness and hotness of an object.
- 5. More than one component
- 6. Does not have shiny appearance.
- 7. A region where an electron is confined.
- 9. Positive ions.
- 11. Consists of positive and neutral charge at the center and surrounded by electron clouds.\
- 14. Schematic arrangement of elements.
- 15. Base formers.
- 16. Reaction releasing energy.
- 17. Electron in the outermost shell.
- 23. Unshared electron pair.
- 27. Contains proton and neutrons.