Across
- 1. Positively charged particles
- 2. _____ rule states when several orbitals are available in a subshell, each orbital gets one electron before the electrons pair up
- 3. ___________ electrons are the electrons in the outermost principal energy level of an atom.
- 5. He
- 8. Ni
- 10. Na
- 12. A _______ table is a table of the chemical elements arranged in order of atomic number
- 14. A substance that ionizes in water to form hydrogen ions, H+. Taste sour and turns litmus paper red.
- 16. Ti
- 19. Electron configuration for this element is
- 21. _______ is a strong acid that is used in car batteries
- 23. Fe
Down
- 1. The _____________ is the first antibiotic discovered by the scientist Alexander Fleming
- 4. Smallest particle of an element
- 6. Nuclear particle with no charge
- 7. Vertical columns in the periodic table, where elements contain similar chemical properties
- 9. Made of 2 or more elements that are chemically combines
- 11. Co
- 13. Form positive ions
- 15. The study ofthe behavior of matter and its charges and how it interacts with other matter and energy
- 17. A substance that produces hydroxide ions, HO− , in water. Taste bitter and turns litmus paper blue
- 18. The fundamental states of matter are: Liquid, solid, and _____
- 20. Negatively charged ions
- 22. ______ Curie first discovered the radioactive elements polonium and radium