Chemistry Mastery Exam 1

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Across
  1. 6. Anything that has space, has mass and volume.
  2. 7. This law states that properties of elements are the periodic functions of their atomic no.
  3. 8. Atoms that lose or gains electrons are called _____.
  4. 11. The measure of the power of attraction
  5. 14. A group of atoms that has an electrical charge is a ___________ ion
  6. 19. These are electrons in the outermost main energy level and the electrons in the d orbital of the next inner main energy level
  7. 21. The rule where 8 valence electrons are needed for nuclei to be stable.
  8. 22. Atoms that gain electrons
  9. 23. the splitting of the nucleus releasing great energy is nuclear __________
  10. 24. two nuclei collide to form another nucleus, releasing great amount of energy is nuclear _______
  11. 26. building blocks of matter
  12. 27. Atoms that lose electrons
Down
  1. 1. a type of radioactive radiation in relation to rays which has the strongest penetrating ability which can be stopped by lead
  2. 2. these behave like a stream of extremely tiny fast moving particles
  3. 3. This type of covalent bond is formed when one atom is significantly more electronegative than the other
  4. 4. elements of the same kind of atom but has a different atomic mass
  5. 5. He suggested that it is impossible to determine the exact location and the exact momentum of very small particles like an electron simultaneously
  6. 6. He created the periodic table (lastname)
  7. 8. The energy required to remove an electron from the atom.
  8. 9. He formulated the Periodic Law (use lastname)
  9. 10. developed the idea of atoms
  10. 11. The energy change associated with an atom gaining an electron (1word)
  11. 12. the chemical property of a radioactive element change as it gives off radiation.
  12. 13. This states that only two electrons occupy an orbital. No two electrons can be described by the same four quantum numbers. This is Pauli’s ___________ Principle
  13. 15. This principle describes the hypothetical process in which electrons are imagined as entering the atomic orbital one by one.
  14. 16. These are bonds formed between metals where the array of cations are held together by the strong attraction between cations and electrons.
  15. 17. This bonding is formed by a shared pair of electrons between two atoms.
  16. 18. This bond is formed when electrons are transferred.
  17. 20. a type of radioactive radiation that is negatively charged which has a medium penetrating ability which can be stopped by heavy clothing
  18. 22. a type of radioactive radiation that is positively charged which has the least penetrating ability which can be stopped by paper
  19. 25. ______ rule states that electrons must occupy orbital’s of the same energy (sublevel) singly before pairing occurs. This also means that the most stable arrangement of electrons on a sublevel is one with the greatest number of parallel spins.