Science Crossword Puzzle

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Across
  1. 1. makes up the right side of the periodic table, properties include being brittle and dull
  2. 3. a positively charged particles, inside of the nucleus
  3. 5. a particle with no charge inside of the nucleus
  4. 7. make up the staircase dividing the metals and nonmetals, includes elements like boron and arsenic
  5. 9. type of material that holds energy very well
Down
  1. 2. a negatively charged particle surrounding nucleus
  2. 4. on the left side of the periodic table, properties include being a good conductor
  3. 6. the center of an atom
  4. 8. atom with more electrons than protons