Atoms/Periodic table Vocab

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Across
  1. 1. An element (e.g. arsenic, antimony, or tin) whose properties are intermediate between those of
  2. 5. Any of the six chemical elements that comprise Group 2 (IIa) of the periodic table
  3. 7. Any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table
  4. 9. Any of the six chemical elements that make up Group 1 (Ia) of the periodic table
  5. 11. The time interval between two successive repetitions.
  6. 13. to or shared with another atom
  7. 15. An atom or group of atoms in which the number of electron s is different from the number of
  8. 17. as by malleability, ductility, and high reflectivity of light.
  9. 20. A theory of matter and energy based on the concept of quanta, especially quantum mechanics.
  10. 21. and solid nonmetals or semiconductors.
  11. 23. of neutrons
  12. 24. A subatomic particle found in the nucleus of every atom.
  13. 25. A part or aspect of something abstract, especially one that is essential or characteristic
  14. 28. The sum of the numbers of protons and neutrons present in the nucleus of an atom
  15. 29. A thing that is composed of two or more separate elements; a mixture.
  16. 31. The small, dense region consisting of protons and neutrons at the center of an atom
  17. 33. A set of objects with an operation *
  18. 34. Subatomic particles found inside the nucleus of every atom
  19. 35. A substance made by mixing other substances together.
  20. 39. with similar atomic structure (and hence similar chemical properties) appear in vertical columns.
  21. 42. Emitting or relating to the emission of ionizing radiation or particles.
  22. 43. A characteristic of a unit of matter that expresses the extent to which it has more or
Down
  1. 2. in order of increasing number of protons in the nucleus
  2. 3. A negatively charged particle, located in the outermost shell of an atom, that can be
  3. 4. The basic unit of a chemical element.
  4. 6. Not likely to give way or overturn; firmly fixed
  5. 8. the tendency, quality, or fact of recurring at regular intervals
  6. 10. Any of various chemical elements that have valence electrons
  7. 12. Any of a class of substances characterized by high electrical and thermal conductivity as
  8. 14. A stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the
  9. 16. A substance having a finite activation energy (band gap) for electron conduction
  10. 18. carrier of electricity in solids.
  11. 19. a fundamental constant that is the smallest known quantity of electricity and that
  12. 22. The number of a chemical element in the periodic system, whereby the elements are
  13. 26. a value (either positive or negative) of 1.602176634 ×10-19 coulombs.
  14. 27. atom, electron, or nucleus, can have.
  15. 30. Any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table.
  16. 32. Members of a family of an element that all have the same number of protons but different
  17. 36. electrons than protons.
  18. 37. A table of the chemical elements arranged in order of atomic number, usually in rows, so that
  19. 38. Atomic weight is measured in atomic mass units (amu), also called daltons.
  20. 40. A group of electrons circulating around a nucleus or a molecule
  21. 41. The fixed amount of energy that a system described by quantum mechanics, such as a molecule,