MATTER

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Across
  1. 2. the relative amount of a particular substance contained within a solution
  2. 4. a solid material which is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity
  3. 8. a minute portion of matter
  4. 9. a metal made by combining two or more metallic elements, especially to give greater strength or resistance to corrosion.
  5. 10. physical substance in general
  6. 11. a thing that is composed of two or more separate elements
  7. 12. a subatomic particle of about the same mass as a proton but without an electric charge
  8. 15. the strength and vitality required for sustained physical or mental activity.
  9. 17. a group of atoms bonded together
  10. 18. a thing that represents or stands for something else
  11. 19. a length or portion of time
Down
  1. 1. any of the elements fluorine, chlorine, bromine, iodine, and astatine, occupying group VIIA (17) of the periodic table
  2. 3. the positively charged central core of an
  3. 5. having the properties of an alkali
  4. 6. a stable subatomic particle occurring in all atomic nuclei
  5. 7. a stable subatomic particle with a charge of negative electricity
  6. 9. the smallest particle of a chemical element that can exist
  7. 13. a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one
  8. 14. an essential or characteristic part of something abstract
  9. 16. a set of elements occupying a column in the periodic table and having broadly similar properties arising from their similar electronic structure