Science Crossword Puzzle Gold Grade

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Across
  1. 2. a subatomic particle, symbol n or n⁰ , which has a neutral charge, and a mass slightly greater than that of a proton.
  2. 3. Rows and columns arrangement of the chemical elements. It is widely used in chemistry, physics, and other sciences, and is generally seen as an icon of chemistry.
  3. 5. Non-tangible substances that cannot be seen or felt, but can be smelt.
  4. 7. an electron in the outer shell associated with an atom
  5. 11. A hard, shiny material that possess good thermal and electrical conductivity
  6. 12. In-between the last two, more conductive than one but not as much as the other,and look similar but are also brittle and fragile.
  7. 14. a lasting attraction between atoms or ions that enables the formation of molecules and crystals.
Down
  1. 1. a small, dense nucleus surrounded by orbiting electrons.
  2. 4. a subatomic particle with a negative one elementary electric charge.
  3. 6. Tangible objects that you can grab, touch, or feel.
  4. 8. A substance that takes the shape of whatever it's in.
  5. 9. diagrams that show the bonding between atoms of a molecule
  6. 10. Lack certain properties, are insanely brittle & fragile, and cannot conduct electricity.
  7. 13. a particle that consists of a nucleus of protons and neutrons surrounded by a cloud of electrons.