test 2 vocab

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Sabri2010
ID:
66629
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test 2 vocab
Updated:
2011-02-28 22:05:39
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chem
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chem
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  1. aqueous
    dissolved in water (salt disolved in water)
  2. chemical reaction
    written when a chemical change occurs
  3. physcial properties
    • density
    • melting point
    • physical state
    • solubility
    • color(but color is NOT a physcial change)
    • taste
    • odor
  4. chemical change
    form a new substance
  5. chemical change indicated by
    • color change
    • bubbles forming
    • formation of precipitate (solid)
    • change in energy
  6. physical change
    • does not form a new substance
    • is a change in state (such as size, shape, and density)
  7. energy
    ability to do work
  8. kinetic energy
    energy of motion
  9. potential energy
    energy that is stored up
  10. law of conservation of energy
    • energy cannot be created or destroyed
    • energy lost = energy gained
    • energy can be transformed form one form to another
  11. activation energy
    energy to get the reaction to begin
  12. law of conservation of matter
    • matter cannot be created or destroyed
    • mass reactants= mass products
  13. specific heat
    • how much energy required to raise 1 gram of a substance 1 C.
    • water has a higher specific heat than Fe
  14. Exothermic Reaction
    energy products < energy of reactants
  15. Endothermic Reaction
    energy is needed to begin reaction
  16. specific heat of metals
    low
  17. specific heat of insulators
    high.
  18. specific heat of water
    higher than s.h. of metal
  19. what is the difference between a physical and chemical change
    a new substance is allways formed during a chemical change, but never during a physical change.
  20. ionic compound
    • neutral
    • between metal and non-metal
    • involves TRANSFER or electrons form metal and non metal
  21. Non-metals
    gain electrons
  22. covalant compound
    • between non metals only
    • involves SHARING of electrons
  23. metals with only one type of cation
    • group 1 and 2 metals
    • aluminum
    • zinc, cadium, silver
  24. non-metals
    • form anions (-) cations
    • ending change when dealing with anions "-ed"
    • anions form only one type of ion unlike metals
  25. naming ioinc compounds
    • metals that form only one type of cation- don't write #
    • metals that can form more than one type of cation- include #
  26. covalant compunds
    between two or moe non-metals share electrons
  27. acids
    • contain hydrogen plus non metals
    • having +1 charge or produce H+ in solution
    • in water (aq)
  28. Binary acids
    contains H+ and one nonmetal
  29. oxyacids
    contain H+, non-metal, and oxygen
  30. prefix 1
    mono
  31. prefix 2
    di
  32. prefix 3
  33. tri
  34. prefix 4
    tetra
  35. prefix 5
    penta
  36. 6
    hexa
  37. 7
    hepta
  38. 8
    octa
  39. 9
    nona
  40. 10
    deca
  41. Rules of naming covalemt compounds
    • 1st element written, if there is more than one, write prefix
    • 1st element written, dont change the name
    • 2nd element-write "ide" at end

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