Across
- 2. a group 1A element
- 6. atom with the same number of protons but a different number of neutrons than another atom
- 8. lines of colored light obtained by passing the light emitted by an element through a prism
- 12. the way in which electrons are arranged around the nucleus of an atom
- 13. the smallest particle of an element that retains its identity in a chemical reaction
- 15. a region around a nucleus where there is a high probability of finding an electron
- 18. the number of protons in the nucleus of an atom
- 20. the region around a nucleus where electrons are likely to be moving
- 23. the total number of protons and neutrons in an atom
- 25. the modern description of electrons in an atom
- 26. the unit used to measure the relative masses of atoms
- 27. the portion of the weighted atomic mass that each isotope composes
- 29. an element found on the right side of the periodic table that does not have characteristics of a metal
- 30. a horizontal row of the periodic table
- 31. a vertical column of the periodic table
Down
- 1. the tendency of an atom to attract electrons
- 3. an element found along the zigzag line in the periodic table
- 4. periodic trend that decreases across periods but increases down groups
- 5. the weighted average mass of the atoms in a naturally-occurring sample of an element
- 7. a subatomic particle with no charge
- 8. a negatively-charged ion
- 9. a charged atom
- 10. a group 2A element
- 11. the amount of energy required to move an electron from one energy level to the next higher energy level
- 14. a negatively-charged subatomic particle
- 16. a positively-charged subatomic particle
- 17. the energy required to remove an electron from an atom
- 19. the one or two letter abbreviation of an element
- 21. an element that conducts electricity well, has high luster, and is malleable and ductile
- 22. a group 7A (or 17) element
- 24. a positively-charged ion
- 28. an element in which the highest occupied orbitals are full