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Flashcards

Lee Chemistry study guide

z.huggins_28 English 60 cards

Cards in this deck (60)

  1. 1Mass of a Proton1 amu
  2. 2Mass of Electron1/1800 or approx. 0 amu
  3. 3mass of Neutron1 amu
  4. 4location of protonnucleus
  5. 5location of electronelectron cloud
  6. 6location of neutronnucleus
  7. 7electrical charge of protonpositive (+)
  8. 8electrical charge of electrongnegative (-)
  9. 9electrical charge of neutronnone/neutral
  10. 10What is an Atom?the smallest part of a substance that still acts like the substance
  11. 11Why is knowing the history of the atom important?1) over time, models are revised as new evidence is gathered
    2) Scientific ideas are subject to change
    3) each new model of the atom was built on the ideas of the earlier ones
  12. 12Two major parts of the atomnucleus and electron cloud
  13. 13located in the center of the atom; contains protons and neutrons; is very densenucleus
  14. 14what is the charge of the nucleus?positive
  15. 15is outside the nucleus; only electrons are found hereelectron cloud
  16. 16charge of the electron cloudnegative
  17. 17Very outside of the electron cloudvalence shell or valence level
  18. 18where are valence electrons found?valence shell / valence level
  19. 19on the periodic table periods go..?left-to right (horizontal)
  20. 20when you move across a period...the properties of the elements change
  21. 21on the periodic table, group or families go..?up and down (vertical)
  22. 22when you move up or down a group/family, the elements...are similar because all the elements in this column have the same number of valence electrons
  23. 23what does periodic mean?occurring at regular intervals
  24. 24what are 3 things in your life that occur periodically?1) eating
    2) sleeping
    3) birthday
  25. 25Periodic Lawthe properties of the elements reoccur in a predictable way when the elements are arranged by increasing atomic number
  26. 26Who is Dimitri Mendeleeva Russian chemist who helped create the modern Periodic table of elements
  27. 27how did Mendeleev arrange the elements?by increasing atomic mass
  28. 28an atom with more or less neutrons than it should have normally (a neutral atom)an isotope
  29. 29an atom with more or less electrons than it should have normally (a neutral atom)an ion
  30. 30when an atom has more electrons than protons it is called...?a negative ion
  31. 31when an atom has more protons than electrons it is called...?a positive ion
  32. 32where does all the mass of an atom come from?the nucleus
  33. 33if an atom has 7 protons, 7 electrons and 8 neutrons what is its mass?15 amu
  34. 34an atom of oxygen has how many protons?8
  35. 35can any oxygen atom ever have a different number of protons?no. it would be a different element then.
  36. 36an isotope is an atom that has more or less ______ than it should normally haveneutrons
  37. 37Is Silicone a halogen?yes
  38. 38is Bromine a halogen?no
  39. 39Is magnesium a metal?Yes
  40. 40Is Aluminum a metal?Yes
  41. 41Which of the following elements has the lowest atomic number? Helium, Nitrogen, Argon, LithiumHelium
  42. 42where do you find metals on the Periodic Table?left of the staircase
  43. 43where do you fine metalloids on the periodic table of elements?bordering the staircase
  44. 44where do you find nonmetals on the periodic table of elementsright of the staircase
  45. 45How many valence electrons do alkali metals have?1
  46. 46how many valence electrons do the carbon group have?4
  47. 47how many valence electrons do the boron group have?3
  48. 48how many valance electrons do the noble gasses have8
  49. 49how many valence electrons do the nitrogen group have?5
  50. 50how many valance electrons do the fluorine group have?7
  51. 51how many valence electrons do the alkaline earth metals have?2
  52. 52how many valence electrons do the oxygen group have?6
  53. 53what is the difference between an element and a compound?a compound is made of more than one element
  54. 54give 3 examples of elements1) nitrogen
    2) carbon
    3) oxygent
    (any element on the periodic table)
  55. 55give 3 examples of compounds1) H20
    2) CO2
    3) NaCl
  56. 56if a compound has the elements ___________ and ___________ and was once part of a living thing it is called an _____________ compound?carbon, hydrogen, organic
  57. 57gram is the measurement for?mass
  58. 58liter is the measurement for?volume (liquids)
  59. 59cm^3volume (solid)
  60. 60meterlength

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Flashcards on Lee Chemistry study guide, created by z.huggins_28 on 15/12/2014.
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