Chem CH. 3

  1. What is a compound that conducts electricity when molten or dissolved in water?
    electrolyte
  2. What is a carbon rod or metallic strip that carries electrical current?
    electrode
  3. What is a positive electrode?
    anode
  4. What is a negative electrode?
    cathode
  5. What is an atom or group of atoms with a charge?
    ion
  6. What is a negative ion?
    anion
  7. What is a positive ion?
    cation
  8. What is the spontaneous emission of particles or rays from unstable atomic nuclei?
    Radioactivity
  9. Which form of radioactivity is a particle consisting of 2 protons and 2 neutrons; a helium nucleus?
    alpha (α)
  10. Which form of radioactivity is made up of negatively charges particles identical to those of cathode rays?
    beta (β)
  11. Which form of radioactivity is most penetrating?
    Gamma rays
  12. What is the chemical symbol of Mercury?
    Hg
  13. What is the chemical symbol of Silver?
    Ag
  14. What is the chemical symbol of Helium?
    He
  15. What is the chemical symbol of Uranium?
    U
  16. What is the chemical symbol for gold?
    Au
  17. Which side of the periodic table are metals found?
    left
  18. What is the difference between a substance and a mixture?
    A substance is like a collection of particles (all one element or compound) whereas a mixture is like a combination of substances
  19. Is carbon dioxide gas a mixture or a substance?
    substance
  20. What is the SI unit for temperature?
    Kelvin
  21. Which substance would sink mercury instead of floating it?
    Gold (Au)
  22. What is the charge of a gamma ray?
    0
  23. What is the charge of an alpha particle?
    2
  24. What is the charge of a beta particle?
    -1 (its an electron)
  25. What is the mass of a beta particle?
    1/2000 amu
  26. What is the mass of an alpha particle?
    4 amu
  27. What is the mass of a gamma particle?
    0 amu
  28. Which radioactive particle is least penetrable?
    alpha
  29. List the radioactive particles from fastest to slowest?
    gamma, beta, alpha
  30. The positive particles had varying masses in _____ experiments using a ____ discharge tube with perforated _____.
    • Goldstein's 
    • gas
    • cathodes
  31. What are cathode rays beams of?
    electrons
  32. Who determined the charge of an electron?
    Millikan
  33. Which type of radioactivity is NOT deflected by a magnetic field?
    gamma, γ
  34. Where is most of the mass of an atom located?
    nucleus
  35. Who's model showed the protons and neutrons in the nucleus and electrons surrounding it?
    Rutherford
  36. What is the chemical symbol of Flourine?
    F
  37. What is a deuterium?
    an isotope of hydrogen that contains 2 nucleons
  38. What is the light spectrum?
    a specific pattern of colors emitted by excited atoms
  39. How can you tell if an atom is in ground state or excited state?
    ground state is all the inner shell are fully filled ; excited if one of the outer shells is filled before filling the inner ones
  40. How many electrons can the third shell hold?
    10
  41. How many electrons can the first shell hold?
    2
  42. How many electrons can the second shell hold?
    6
  43. Where are the Alkaline Earth metals located?
    on the left, 2nd period
Author
notgonnafail
ID
348762
Card Set
Chem CH. 3
Description
test study
Updated