Across
- 5. Elements that are able to form anions, acidic oxides,acids,and stable compounds with Hydrogen,carbon is an example of this
- 6. The number of protons in an element's atom,determines place on the Periodic Table
- 9. The average added weight of protons and neutrons of an elements isotopes
- 12. Particles smaller than an atom
- 14. Table of chemical elements arranged by atomic number
- 18. Group 18 on the Periodic Table,made up of gases,have a "full outer shell".
- 19. Subatomic particles with a positive charge,found I an atom's nucleus
- 20. Vertical columns on the Periodic Table
- 21. Elements that form cations and have metallic bonds,iron is an example of this
- 22. Electrons on "outer shell" that can form bonds with other elements
- 24. Positively charged ions
- 25. The center of an atom,made up of protons and neutrons
Down
- 1. Another name for groups
- 2. Negatively charged ions
- 3. Group 1 on the Periodic Table, highly reactive,has 1 valence electron
- 4. Group 2 on the Periodic Table,slightly less reactive than group 1,has 2 valence electrons
- 7. The elements when arranged in order of atomic number show periodic variation of atomic structure and most of their properties
- 8. Atom's of elements where the number of neutrons change
- 10. Subatomic particles with no charge,found inside an atom's nucleus
- 11. Elements whose characteristics fall between metals and solid nonmetals,boron is an example of this.
- 13. Horizontal rows on the Periodic Table
- 15. Atom of an element where the charge of the particle changes
- 16. Subatomic particles with a negative charge
- 17. Group 17 on the Periodic Table, highly reactive, has 7 valence electrons
- 23. Smallest unit of chemical matter