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اختبار مراجعة 2

Quiz by Dr.mariam 0547389123

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24 questions
Show answers
  • Q1

    If 50cm3 of a liquid has a mass of 82.5 g whatis the density in g/mol?

    80.4

    1.65

    1.81

    0.55

    300s
  • Q2

    ………. Is the amount of heat necessary to raisethe temperature of 1

    specific heat

    Calorie

    amount of heat

    specific gravity

    300s
  • Q3

     Isotopes have the same ……………..

    mass number 

    number of neutrons

    number of protons

    300s
  • Q4

    Which of the following is not an example of a compound?

     Salt

    Hydrogen

    limestone

    Water

    300s
  • Q5

    How many protons and electrons does N3- have?

    7.4

    8.7

    7.9

    7.10

    7.11

    300s
  • Q6

    Which of the following are isotopes?

    35Cl and 35Cl-

    Na and K

    23 Na and 24Na

    O and O2-

    300s
  • Q7

    Group IA elements is……

    transition metal

    metals

    Alkali metals

    Halogens

    300s
  • Q8

    Which one of the following statements about p orbitals isin correct?

    they are found in all principal energy

    each p orbital can hold up to two electrons

    the ate three types of p orbital

    they have a dumb-bell shape

    300s
  • Q9

      …………….. orbitals are spherically symmetrical.

    p

    d

    s

    f

    300s
  • Q10

    How many Kilocalories of heat is required to raise thetemperature of 225g of aluminum from 20 degrees Celsius to 100 degrees Celsius?

    (specific heat of aluminum =0.21 cal/gᵒC)

    85 kcal

    0.50Kcal

    3.8 Kcal

    none of the above

    300s
  • Q11

    The prefix meaning 0.001 is…….

    Centi

    Milli

    Deci

    Kilo

    300s
  • Q12

    Number of orbitals in f sublevel is………..

    7

    2

    5

    14

    300s
  • Q13

     If The difference in electronegativity between Cu and Ois 1.6 Cu-O bond is …….

    None of the above

    Polar covalent bond

    Non polar covalent bond

    Ionic bond

    300s
  • Q14

     Barium hydroxide contains …………

    1 Ba2+ and 1 OH-

    1 Ba2+ and 2 OH-

    2Ba2+ and 1 OH-

    2Ba2+ and 3 OH-

    300s
  • Q15

    Which is the formula of ammonium sulfide?

    (NH4)2S

    (NH4)2SO3

    (NH4)2SO4

    (NH4)SO3

    300s

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