Chem 10 test 2

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Chem 10 test 2
2014-10-09 17:28:24
Chem 10 test

Chem 10 test 2
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  1. Energy
    The capacity to do work or produce heat
  2. Energy Units
    SI Unit = Joules (J)
  3. calories
    • The scientific version 
    • cal
  4. Calories
    • The dietary version 
    • Cal
  5. Kinetic energy
    Energy of motion
  6. Potential energy
    Energy of position
  7. First Law of Thermodynamics
    • Conservation of energy
    • Energy cannot be created or destroyed only converted from one to another
  8. Specific Heat Capacity
    The amount of heat energy in Joules (J) required to raise the temp of 1g of a substance by 1 degree C
  9. Thermal Energy
    Type of kinetic energy associated with a random motion of he atoms/molecules of a substance
  10. Heat
    • Symbol: q but unit is J or kJ
    • When heat flows into a substance, it's temp inc. and vice versa
  11. Elements
    • Simplest type of pure substance
    • Cannot be broken down by chemical and physical processes
  12. Periodic table: Rows
    • Also called periods and are numbered 1,2, etc
    • The last 2 separated rows have different names
  13. Lanthanides
    First separated row of the periodic table #57-71
  14. Actinides
    Second separated row of the periodic table #89-103
  15. Periodic table: Columns
    Also called groups/families, they are also numbered/named but they are not as obvious as rows
  16. Element character
    Weather an element is a metal, non metal, or metalloid
  17. Metal properties
    • Malleable
    • Ductile
    • Good conductors of heat/electricity
    • Chemically react with non metals and form ionic compounds
    • Do NOT react with other metals
  18. Malleable
    Dent and not shatter into pieces
  19. Ductile
    Can be stretched out into wire
  20. Metalloids Properties
    • Between metals and non-metals
    • Ex. Si, Ga, As, Sb, Te
  21. 8 Diatomic elements
    • Exist as 2 atomic molecules and are held together by a chemical bond (pairs)
    • Hydrogen - H2
    • Oxygen - O2
    • Nitrogen - N2
    • Flourine - F2
    • Chlorine - Cl2
    • Bromine - Br2
    • Iodine - I2
    • Astate - At2
  22. Monatomic elements
    Exist as unbounded individual atoms
  23. Atoms
    • All matter is composed on atoms
    • In elements there is only 1 type of atom
  24. Atom structure
    • Made up of subatomic particles
    • They are made up of 3 primary particles
  25. Subatomic Particles
    Protons +, neutrons (neutral), electrons (-)
  26. # of protons
    The number of protons identify and element
  27. Protons
    Atomic number of an element and they symbol is Z
  28. # of electrons
    You can gain or lose electrons and acquire a charge and then become ions
  29. Ions
    Are cations, and anions
  30. Cations
    • If an atom loses electrons that means
    • you have more protons than electrons, now you have a positively charged ion and it is called a cation
  31. Anion
    • If an atom gains electrons that means
    • you have less protons than electrons, now you have a negatively charged ion and it is called an anion
  32. Deuterium
    A hydrogen atom that has a neutron so it doubles the weight of hydrogen
  33. Tritium
    • A hydrogen atom that has 2 neutrons so it
    • triples the weight of hydrogen

    • You get the atomic mass by taking the avg of
    • something like hydrogen because hydrogen can have 1 or 2 neutrons but it is
    • rare usually is doesn’t and that changes the weight that is why it isn’t 1amu