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matter around us

Candy A Chemistry IX Inglês 58 flashcards

Flashcards do conjunto (58)

  1. 1Can be physically separated.Mixtures.
  2. 2Types of heterogeneous mixtures.colloids n suspensions
  3. 34 properties of mixtures1) constituted by more than one kind of pure form of matter.
    2) can be separated by physical methods.
    3) components do not combine chemically.
    4) components do not lose their properties.
  4. 4homogeneous vs heterogeneous mixtures1)uniform compo throughout - non uniform compo throughout
    2)boundries particles cannot Be differentiated- components can be identified easily.
    3)NO OF PHASE: single - more than one.
    4) does not show Tyndall effect - shows Tyndall effect
    5)PARTICLE SIZE: less than one nanometer - one nanometer to one micrometer or more.
  5. 5The components of a _______ retain their own physical properties.mixtures
  6. 6soluteSubstance present in smaller quantity in a mixture.
  7. 7Solvent.Substance present in larger quantity in a mixture.
  8. 8Identify solute and solvent in a tincture of iodine.Iodine solute. Alcohol solvent.
  9. 9solution is a ______ type of mixturehomogeneous
  10. 10alloy is ______ - ________ solutionsolid - sloid
  11. 11alloy a _____ mixture made ofhomogeneous, 1)two or more metals 2) metal and nonmetal.3) 2 nonmetals.
  12. 12why is alloy considered a solution1) components cannot be separated by physical methods.2) boundaries are not distinct.3) can have variable compositions.
  13. 13why allow is considered a mixture(points from earlier alloy question.) + 1) can have variable compositions. 2) shows the properties of its constituents.
  14. 14Gas solvent gas salute. State of solution ?examples?Gas. Air.
  15. 15Liquid solvent liquid solute. State of solution? examples?Liquid. Alcoholic beverages.
  16. 16Liquid solvent, solid solute. State of solution?examples?Liquid. sugar solution.
  17. 17Liquid solvent gas solute. State of solution? examples.?Liquid. soda ( Carbonated water )
  18. 18Solid solvent, solid solute. State of solution? examples.?Solid. Metal alloys.
  19. 19Solid solvent. Gas solute. State of solution ?examples?Solid. Hydrogen in platinum.
  20. 20Properties or characteristics of a solution.(7 total)1) homogeneous mixture of 2 or more substances.
    2) particle size smaller than 1nm(10^-9) cannot be seen by naked eye.
    3) only one phase.
    4) constituent particles mixed evenly throughout.
    5) do not show Tyndall effect.
    6) solute cannot be separated by filtration.
    7) are stable since when left undisturbed, the particles do not settle in bottom.
  21. 21what is tyndall effectPhenomenon by which particles scatter light.
  22. 22Why solutions don't show Tyndall effect?Very small particle size. They do not scatter a beam of light passing through. Therefore, do not show Tyndall effect.
  23. 23classifications of mixture on basis of particle size( smallest to largest)solution
  24. 24Saturated solution.When no more solute can be dissolved in a solution at a given temperature. When the solution has reached its saturation point.
  25. 25Saturation point.When a solution cannot dissolve more solute at a given temperature, the point is called saturation point of a solution.
  26. 26solubility?The amount of the solution present in the saturated solution at the particular temperature.
  27. 27Unsaturated solution.When the amount of solute contained in the solution is less than the saturation level.
  28. 28Concentration of a solution.The amount of solute present in a given amount of solvent or solution.
  29. 29Mass. By mass percentage of a solution.(ans=concentration)Mass of solute/mass of SOLUTION * 100.
  30. 30Mass by volume percentage of a solution.(ans=concentration)Mass of solute/volume of SOLUTION *100.
  31. 31Volume by volume percentage of a solution. (ans=concentration)Volume of solute /volume of SOLUTION *100.
  32. 32concentration=1)Amount of solute /amount of solvent.
    2) amount of solute /amount of solution.
  33. 33Properties of a suspension.1) heterogeneous mixture.
    2) particles can be seen by the naked eye.
    3)show tyndall effect . Scatter a beam of light passing through it and make its path visible.
    4) suspension is unstable. Solute particles settle down when left undisturbed.
    5) can be separated from the mixture by process of filtration.
    6) when particles settle down, the suspension breaks and it does not scatter light anymore.
    7)size of solute particles- more than 100nm in diameter
  34. 34examples of suspensionchalk+water, muddy water, milk of magnesia
  35. 35why does colloid appear to be homogeneous?due to relatively smaller size of particles as compared to a suspension.
  36. 36properties of a colloid1)A colloid is a heterogeneous mixture.
    2) The size of particles of a colloid is too
    small to be individually seen by naked
    eyes.
    3)Colloids are big enough to scatter a
    beam of light passing through it and
    make its path visible.
    4)They do not settle down when left
    undisturbed, that is, a colloid is quite
    stable
    5)cannot be separated from mixture by filtration, can be separated by centrifugation
  37. 37what are the components of a colloidal solutionDispersed
    phase and Dispersing Medium
  38. 38what is dispersed phasethe solute like component or the dispersed particles in a colloid form the dispersed phase(like solute)
  39. 39dispersing mediumthe component in which the dispersed phase is suspended(like solvent)
  40. 40dp - liquid, dm- gas . type?example?aerosol, eg.-fog,clouds,mist
  41. 41dp - solid, dm-gas type?example?aerosol , eg.-smoke, automobile exhaust
  42. 42dp - gas , dm liquid. type?example?foam , eg-shaving cream
  43. 43dp - liquid , dm - liquid type?example?emulsion , eg- milk,face cream
  44. 44dp - solid, dm - liquid type?example?sol , eg- milk of magnesia, mud
  45. 45dp - gas, dm - solid type?example?foam , eg- foam , rubber , sponge
  46. 46dp - liquid, dm- solid type?example?gel , eg.- jelly, cheese, butter
  47. 47dp solid, dm solid type?example?solid sol eg. coloured gemstone, milky glass
  48. 48aerosol1)dp - solid, dm-gas
    2)dp - liquid, dm- gas
  49. 49foam1)dp - gas , dm liquid
    2)dp - gas, dm - solid
  50. 50emulsiondp - liquid , dm - liquid
  51. 51soldp - solid, dm - liquid
  52. 52geldp - liquid, dm- solid
  53. 53solid soldp solid, dm solid
  54. 54physical changes1)no new substance formed
    2)substances involved do not change their identity
    3)mostly reversable
    4)melting ice, freezing water etc.
  55. 55chemical changes1)new substance formed
    2)substances involved change their identity
    3)usually irreversible
    4)eg. burning of magnesium wire, burning of paper etc.
  56. 56alloy is _____ - _______ solutionsolid - solid
  57. 57solubility formula(mass of solute/mass of solvent) *100
  58. 58concentration formula(amount of solute/ amount of solution)*100

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IX Chemistry FlashCards sobre matter around us, criado por Candy A em 15-06-2022.
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Candy A
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