periodic table terms

Edit Answers
1234567891011121314151617181920212223242526272829
Across
  1. 2. the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
  2. 3. the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with.
  3. 5. reactive nonmetallic elements that form strongly acidic compounds with hydrogen from which simple salts can be made.
  4. 9. any of the six chemical elements that comprise Group 2 of the periodic table.
  5. 11. the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
  6. 15. any of the gaseous elements occupying Group 0 of the periodic table.
  7. 17. each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei
  8. 19. All elements in a ______ have the same number of electron shells.
  9. 21. each of the actual or potential patterns of electron density that may be formed in an atom or molecule by one or more electrons, and that can be represented as a wave function.
  10. 23. the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons
  11. 24. the fixed amount of energy that a system described by quantum mechanics, such as a molecule, atom, electron, or nucleus, can have.
  12. 26. any of the set of metallic elements occupying a central block in the periodic table
  13. 28. the structure in a cell that contains the chromosomes
Down
  1. 1. a table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure
  2. 4. a chemical element that mostly lacks distinctive metallic properties
  3. 6. a chemical substance that cannot be broken down into other substances by chemical reactions.
  4. 7. a solid material that is typically hard, shiny, malleable
  5. 8. the total number of protons and neutrons in a nucleus.
  6. 9. the basic unit of a chemical element.
  7. 10. an element whose properties are intermediate between those of metals and solid nonmetals or semiconductors.
  8. 12. an uncharged atomic particle that has a mass nearly equal to that of the proton
  9. 13. any of the elements occupying Group IA of the periodic table
  10. 14. the association of atoms or ions to form molecules, crystals, and other structures.
  11. 16. The vertical columns on the periodic table
  12. 18. a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
  13. 20. a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
  14. 22. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
  15. 25. In a _____, the chemical elements have atoms with identical valence electron
  16. 27. the state or power of being reactive or the degree to which a thing is reactive.
  17. 29. a positively charged ion