Across
- 2. A single electron or one of two or more electrons in the outer shell of an atom that is responsible for the chemical properties of the atom
- 4. A basic part of a whole
- 5. One of the four quantum numbers that state the position of the electron with respect to the nucleus
- 6. Abstract, phsychological representations of how tasks should be carried out
- 9. An apparatus for producing and recording spectra for examination
- 11. The electrons encircle the nucleus of the atom in specific allowable paths called orbits
- 13. Building block of matter; contains subatomic particles, neutrons, protons, and electrons
- 14. The mass of an atom of a chemical element in atomic mass units
- 15. One of the three subatomic particles that make up an atom.
- 16. A proton or neutron especially in the atomic nucleus.
- 17. A column on the Periodic Table
- 19. The smallest discrete u unit of a phenomenon
- 22. The number of protons in a nucleus
- 24. A very simplified representation of the valence shell electrons in a molecule
Down
- 1. Hypoallergenic formulas for infants with one or more food allergies
- 3. Small dense region consisting of protons and neutrons at the center of an atom
- 4. An elementary particle that has a negative charge of electricity and travels around the nucleus of an atom
- 7. A constructed copy of an object that is designed to represent that object
- 8. The spectrum of electromagnetic radiation produced or absorbed by an electron during transitions between levels of energy within an atom
- 10. Atoms with the same number of protons but different number of neutrons
- 12. The horizontal rows of the periodic table
- 18. a small, positively charged particle of matter found in the atoms of all elements
- 20. A region of space around the atomic nucleus upon which elements may reside
- 21. A code to identify a specific element in the PT
- 23. A table array of the chemical elements organized by the atomic number