trimester 1 final review

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Across
  1. 2. gas-any of the gaseous elements helium, neon, argon, krypton, xenon, and radon, occupying Group 8
  2. 5. basic unit of a chemical element.atomic number-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.
  3. 11. or more forms of an element with same number of protons but different number of neutrons
  4. 13. charge
  5. 17. neutral charge
  6. 18. bond-the bonding of nonmetal and metal elements
  7. 20. negative charge
Down
  1. 1. name- what is is called
  2. 3. the element code name
  3. 4. central and most important part of an object
  4. 6. between those of metals and solid nonmetals.
  5. 7. chemical element of atomic number 4, a hard gray metal.
  6. 8. solid material that is typically hard, shiny
  7. 9. element or substance that is not a metal
  8. 10. a yellow precious metal
  9. 12. number is 7
  10. 14. chemical element of atomic number 7
  11. 15. table-a table of the chemical elements arranged in order of atomic number
  12. 16. atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
  13. 19. the number is 8