Across
- 3. The possible energy that electrons in an atom can have
- 8. An atom of a given element that has a different number of neutrons and different mass number
- 14. A unique number for each element that equals the number of protons in an atom of that element
- 19. The positively charged subatomic particles that are found in the nucleus of an atom
- 20. Visual models of the most likely locations for the electrons in an atom
- 21. An element that is a good conductor of heat and electricity
- 22. An arrangement of elements in columns based on a set of properties that repeat from row to row
- 23. Elements that form a bridge between elements on the left & right sides of the period table
- 24. The elements in group 7A of the periodic table
- 25. The negatively charged subatomic particles that are found in the space outside the nucleus of an atom
Down
- 1. The arrangement of electrons in the orbitals of an atom
- 2. The neutral subatomic particles that are found in the nucleus of an atom
- 4. Rows of elements in a periodic table
- 5. Electrons that are in the outermost energy level of an atom
- 6. The pattern of repeating properties displayed by elements in the periodic table
- 7. Elements in group 1A of the periodic table not including hydrogen
- 9. Regions of space around the nucleus where an electron is likely to be found
- 10. An element with properties that fall between those of metals & nonmetals
- 11. An element that is a poor conductor of heat & electricity
- 12. The dense positively charged mass located in the center of an atom
- 13. Columns of elements in a period table
- 15. The elements in this group don't react with any other element
- 16. The sum of the number of protons & neutrons in the nucleus of an atom
- 17. Elements in group 2A of the periodic table
- 18. The average mass number of all of the isotopes of an element on Earth