Physical Science

12345678910111213141516
Across
  1. 4. Negatively charged, located outside of the nucleus
  2. 5. Positively charged, located in the nucleus,
  3. 7. Mass The average mass of all the isotopes of an element
  4. 10. Number The number of protons and electrons in an atom
  5. 12. 2nd most abundant opposite properties of metals
  6. 14. Smallest group, properties/characters of metals and non metals
  7. 16. Make up the majority of the periodic table
Down
  1. 1. possible energies that electrons in an atom can have
  2. 2. Horizontal rows on the periodic table
  3. 3. a chart of the elements showing the repeating pattern of elements, made by Dmitri Mendeleev
  4. 6. Reactive, nonmetallic, group 18, 8 valence electrons most stable arrangement of electrons. Used for things such as balloons, lighted signs, and light bulbs
  5. 8. Atoms with the same number of protons but different numbers of neutrons
  6. 9. Vertical columns on the periodic table
  7. 10. extremely reactive due to having only 1 valence electron the atom is more eager to bond to another atom to become more stable. Solid at room temp, soft, low density, in group 1
  8. 11. No charge, located in the nucleus
  9. 13. Building blocks of matter
  10. 15. levels