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11th grade Chemistry 2nd Quarter Exam

Quiz by Adella Alim

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36 questions
Show answers
  • Q1
    H2O is an example of a _______________ equation
    balanced
    30s
  • Q2
    C + 2H2 ------- CH4. The coefficient in this equation is
    2
    30s
  • Q3
    Identify type of chemical reaction C H12 O + 6 O2---------6 Co2 + 6 H2 O
    combustion
    30s
  • Q4
    2 HCN -----------H2 + 2C + N2 this type of chemical Reaction is:
    Decomposition
    30s
  • Q5
    (N H4)2 (CO3) + 2 PO4--------- 2(NH4)4 (PO4) + 3 CO2 this equation is an example of this type of chemical Reaction:
    Single Replacement
    30s
  • Q6
    These elements all have eight (8) valence electrons
    Noble gases
    30s
  • Q7
    ___________________ ________________ of an atom are located in the highest energy level.
    valence electrons
    30s
  • Q8
    Neon has 2 energy levels and 8 valence electrons
    True
    True
    False
    30s
  • Q9
    Krypton has 2 energy levels and 8 valence electrons
    false
    True
    False
    30s
  • Q10
    In Column #1 on the periodic Table of elements, all of the elements have a valence electron of 1
    TRUE
    TRUE
    False
    45s
  • Q11
    In Column #2 on the periodic Table of elements, all of the elements have a valence electron of 4
    False
    False
    TRUE
    45s
  • Q12
    What is the missing coefficient in this equation....NaCl + HCL__-------H2 + Na Cl
    3
    1
    2
    2
    45s
  • Q13
    Electron Dot Model consist of ___________ __________ encircled with dots representing a specific number of _______________ _______________.
    chemical symbol, valence electrons
    45s
  • Q14
    Never change the _____________________ when balancing an equation
    subscripts
    45s
  • Q15
    A _____________________ _________________ is a process in which some substances change into different substances
    Chemical Reaction
    45s

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