Physical Science Midterm Review Crossword Puzzle

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Across
  1. 2. atom which has lost one or more electrons
  2. 4. smallest unit of matter
  3. 8. the compactness of particles within a substance
  4. 11. atoms that are the same element but have different masses
  5. 12. atoms that are the same element but have different charges
  6. 13. the property of metals that describes its ability to transfer of heat and electricity
  7. 15. found to the left of the metalloid stair-step
  8. 16. the subatomic particle that orbits around the nucleus and has no mass
  9. 18. negatively charged ion
  10. 19. the amount of space an object takes up
  11. 21. at room temperature, all nobel gas elements and most nonmetal elements are...
Down
  1. 1. the atomic number represents the number of...
  2. 3. anything that has mass and takes up space
  3. 5. the property of metals that describes its ability to bend without breaking
  4. 6. the property of metals that describes its ability to be pulled into thin wires
  5. 7. row on the periodic table going from left to right
  6. 9. an atom's mass number includes the number of protons and...
  7. 10. the state of matter with the least amount of kinetic energy and the least amount of spacing between particles
  8. 14. column on the periodic table going from top to bottom
  9. 17. the mass of an atom comes from its...
  10. 20. the amount of matter in a substance