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اختبارات شاملة كويز (2)

Quiz by Dr. Mariam

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10 questions
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  • Q1

    A massspectrometer shows that a sample of terrestrial copper contains two isotopes: 63Cu(69.15%, atomic mass 62.9296) and 65 Cu (30.85% atomic mass64.9278). What is the atomic weight for this sample of copper?

    65.22 amu

    64.33 amu

    64.00 amu

    63.55 amu

    120s
  • Q2

    Carbon dioxide (CO2) is an example for ……..

    Atoms

    Compounds

    Mixtures

    Elements

    120s
  • Q3

    Which of the following is the largest unit?

    Microgram

    Milligram

    Pictogram

    120s
  • Q4

    Different isotopes of the same element have the same………

    Numbers of electrons

    Radioactivity

    Mass number

    Numbers of neutrons

    120s
  • Q5

    The change from the liquid state to the gaseous state is called

    Solidification

    Sublimation

    Condensation

    Vaporization

    120s
  • Q6

    1 miga gram=………..gram

    106

    10-9

    10-3

    109

    120s
  • Q7

    There is no unit for ……..

    Specific heat

    Density

    Volume

    Specific gravity

    120s
  • Q8

    A solution of sand in water may be defined as a…………

    Heterogeneous mixture

    Heterogeneous compound

    Homogeneous compound

    Homogeneous mixture

    120s
  • Q9

    If the density of substance is 0.5 gram\cm3,This means that the mass of 100 cm3 of this substance should be………..

    0.008 gram

    80 grams

    125 grams

    50grams

    120s
  • Q10

    What is the standard SI unit for volume?

    Cubic meter

    Milliliter

    Liter

    Cubic centimeter

    120s

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