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  1. What part of the atom is not part of the nucleus?
    Element
  2. Name for the smallest amount of an element we can have
    atom
  3. The atomic number tells us what about the atom?
    Number of neutrons
  4. Valence electrons represent the number of electrons
    In the outermost shell
  5. The atomic mass tells us what about the atom?
    Number of protons and neutron
  6. Element with 24 proton
    Chromium
  7. Two atoms of the same element that differ in their number of neutrons are
    Isotopes
  8. If mercury-201 is given two more neutrons it would become
    203

    Hg

    80
  9. Generic formula for a radioactive element:
    Atomic number

    Symbol for the element

    Atomic weight (relative mass)
  10. When an atom that wants to gain an electron comes in contact with an atom that wants to lose an electron, what is likely to happen?
    An ionic bond
  11. Ionic bond
    One atom gives away an electron and the other takes it
  12. Covalent bond
    Two atoms stick together and share electrons
  13. Hydrogen
    • 1
    • H
    • 1.0079
  14. Helium
    • 2
    • He
    • 4.0026
  15. Lithium
    • 3
    • Li
    • 6.942
  16. Berylilum
    • 4
    • Be
    • 9.0122
  17. Boron
    • 5
    • B
    • 10.811
  18. Carbon
    • 6
    • C
    • 12.011
  19. Nitrogen
    • 7
    • N
    • 14.007
  20. Oxygen
    • 8
    • O
    • 15.999
  21. Fluorine
    • 9
    • F
    • 18.998
  22. Neon
    • 10
    • Neon
    • 20.180
  23. Sodium
    • 11
    • Na
    • 22.990
  24. Magnesium
    • 12
    • Mg
    • 24.305
  25. Aluminium
    • 13
    • Al
    • 26.086
  26. Phosphorus
    • 14
    • P
    • 30.974
  27. Sulfur
    • 16
    • S
    • 32.0974
  28. Chlorine
    • 17
    • Cl
    • 35.453
  29. Argon
    • 18
    • Ar
    • 39.948
  30. Potassium
    • 19
    • K
    • 39.098
  31. Calcium
    • 20
    • Ca
    • 40.078
  32. Scandium
    • 21
    • Sc
    • 44.956
  33. Titanium
    • 22
    • Ti
    • 47.867
  34. Vanadium
    • 23
    • V
    • 50.942
  35. Chromium
    • 24
    • Cr
    • 51.996
  36. Manganese
    • 25
    • Mn
    • 54.938
  37. Iron
    • 26
    • Fe
    • 55.845
  38. Cobalt
    • 27
    • Co
    • 58.933
  39. Nickel
    • 28
    • Ni
    • 58.693
  40. Copper
    • 29
    • Cu
    • 63.546
  41. Zinc
    • 30
    • Zn
    • 65.38
  42. How many electrons can fit in the lowest energy level of an atom?
    2
  43. The atomic number is equal to
    The number of protons
  44. The number of neutrons is equal to
    The atomic mass minus the atomic number
  45. How do you find the average atomic mass for an atom?
    Take the abundance in nature percentage and multiply it by the atomic mass number. add those numbers together.

    • Ex. 90.5% neon-20, 0.3% neon-21, 9.2 neon-22.
    • .905*20=18.1
    • .003*21=.063
    • .092*22=2.024
    • (The sum is)=20.187 AMU
  46. What is the difference between oxygen-16 and oxygen-18?
    They are isotopes, oxygen-16 has 16neutrons and oxygen-18 has 18 neutrons
  47. Protons and neutrons have a mass of
    1
  48. Electrons have a mass of
    1/1800 (counted as 0)
  49. In an electrically neutral atom the number of protons in the nucleus is equal to the number of
    electrons in that surround the nucleus
  50. A positive electron has more
    protons than electrons
  51. The unti of electric charge, the coulomb, is the charge on
    a specific large number of electrons
  52. The electrical force between charges is strongest when the charges are
    Close together
  53. Combing your hair rubs electrons from your hair onto a comb. The comb becomes
    Negatively charged
  54. Electric potential, measured in volts, is the ratio of electric energy to the amount of electric
    Charge
  55. If you comb your hair and the comb becomes positively charged, then your hair becomes
    Negatively charged
  56. Insulator
    Something that holds onto its electrons
  57. Conductor
    Holds loosely to its electrons
  58. Two charged particles held close to each other are released. As they move, the force on each particle increases. Therefore the particles must have
    Opposite sides
  59. Charge flows in
    A closed circuit
  60. The primary cause of voltage is not
    Voltage
  61. The primary source of electrons in an ordinary electrical circuit is
    The electrical circuit itself
  62. When a light is turned on in a DC circuit, the average speed of electrons in the lamp is
    Less than 1 cm/s
  63. An ampere is a unit of electrical
    Current
  64. If you want to find the value of the electric field at the place where the charge is located you use
    electric field strength= F/q
  65. A positively charged light metal ball is suspended between two oppositely charged metal plates on an insulating thread. After being charged once, the plates are disconnected from the battery. Describe the behavior of the ball
    The + bll would attract to the - plate. Once it made contact it would become - charged and attract to the + plate, and so on until either plate is no longer charged.
  66. What is the difference between voltage and electrical potential energy
    Electrical potential energy is the potential energy of a specific charge based on its position in the system. The voltage or eletrical potential is the difference in electrical potential across a wire or circuit element.
  67. What does a circuit breaker do?
    It limits the amount of current that can flow through a circuit.
  68. What is the difference between a 20amp and a 15amp circuit breaker?
    The 20amp will allow 20amps, the 15amp will allow 15 amps
  69. The current
    Remains constant
  70. Which way do electrons flow?
    From negaive to positive.

Card Set Information

Author:
 ECCammi
ID:
 157890
Filename:
 Physics
Updated:
2012-06-09 02:36:35
Tags:
Semester Final Notes
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Notes for the Final
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