Across
- 3. the distance from the nucleus of an ion up to which it has an influence on its electron cloud
- 4. ions that are negatively charged
- 6. patterns in elements on the periodic table
- 8. characteristic of a substance that may be observed when it participates in a chemical reaction
- 9. any substance that cannot be decomposed into simpler substances by ordinary chemical processes
- 10. vertical division of a page or text
- 14. tendency of an atom to attract electrons in a molecule
- 15. amount of energy required to remove an electron from an isolated atom or molecule
- 16. When an atom has an equal number of electrons and protons
- 17. column in the periodic table of the chemical elements
Down
- 1. arranges the chemical elements into rows and columns
- 2. blocking of valence shell electron attraction by the nucleus, due to the presence of inner-shell electrons
- 5. becoming smaller or fewer in size, amount, intensity, or degree
- 7. measure of the size of an atom
- 11. becoming greater in size, amount, or degree
- 12. ions that are positively charged
- 13. horizontal row of the periodic table
- 18. horizontal arrangement of items