Matter

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Across
  1. 1. number - the total number of protons and neutrons in an atomic nucleus.
  2. 3. - an element whose properties are intermediate between those of metals and solid non-metals or semiconductors.
  3. 5. - a specialized structure occurring in most cells
  4. 7. - a group of two or more atoms that form the smallest identifiable unit into which a pure substance
  5. 10. - column in the periodic table of the chemical elements.
  6. 13. - anything that has mass and volume
  7. 15. - smallest unit into which matter can be divided without the release of electrically charged particles.
  8. 17. - the abundance of a constituent divided by the total volume of a mixture.
  9. 18. - the spontaneous passage or diffusion of water or other solvents through a semipermeable membrane
  10. 19. - process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration
  11. 20. earth - metal, any of the six chemical elements that comprise Group 2 of the periodic table.
Down
  1. 2. - a notation of one or two letters representing a chemical element.
  2. 4. - any substance composed of identical molecules consisting of atoms of two or more chemical elements.
  3. 6. - any substance that cannot be decomposed into simpler substances by ordinary chemical processes.
  4. 8. - the capacity for doing work.
  5. 9. - a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
  6. 11. number - the number of a chemical element in the periodic system
  7. 12. - an element that readily forms positive ions and has metallic bonds.
  8. 14. - metallic substance composed of two or more elements, as either a compound or a solution.
  9. 16. table - a tabular display of the chemical elements, which are arranged by atomic number