Balancing Chemical Equations
3 years ago
bshagerman
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10 QuestionsShow answers
  • Question 1
    30 seconds
    Q. How many Oxygens are in this molecule? 
    (OH)2
    answer choices
    4
    1
    2
    3
  • Question 2
    45 seconds
    Q. What are the smaller numbers that you CANNOT change in a chemical equation? 
    answer choices
    Coefficient
    Products
    Reactants
    Subscript
  • Question 3
    45 seconds
    Q. What are the larger numbers that you CAN CHANGE in a chemical equation? 
    answer choices
    Coefficient 
    Products
    Reactants
    Subscripts
  • Question 4
    60 seconds
    Q. How many HCl molecules do you need to balance this equation? 
    Mg +  __HCl --->  MgCl2 + H2
    answer choices
    1
    2
    3
    4
  • Question 5
    30 seconds
    Q. Pb(NO3)2  +  KI --> PbI2 + KNO3
    What type of reaction is this? 
    answer choices
    Synthesis 
    Decomposition 
    Single Replacement
    Double Replacement 
  • Question 6
    180 seconds
    Q. __Na  +  O2 ----->  __Na2O
    Type of reaction? 
    Balance it too. :)
    answer choices
    Synthesis, 2Na /  4Na2O
    Decomposition, 4Na /  2Na2O
    Synthesis, 4Na /  2Na2O
    Decomposition, 2Na /  4Na2O
  • Question 7
    30 seconds
    Q. What type of reaction is this?  
    __H2O2 ---->  __H2O + O2
    answer choices
    Synthesis
    Decomposition 
    Single Replacement
    Combustion 
  • Question 8
    30 seconds
    Q. What law governs the balancing of chemical equations? 
    answer choices
    Law of Energy
    Law of Conservation of Matter/Mass
    Law of Gravity
    Law of Matter Movement 
  • Question 9
    120 seconds
    Q. Balance this chemical reaction......?  
    __H2O2 ---->  __H2O + O2
    answer choices
    2H2O2  //  2H2O
    1H2O2  //  2H2O
    2H2O2  //  1H2O
    H2O2  //  2H2O
  • Question 10
    45 seconds
    Q. Why is it called the Law of Conservation of Matter/Mass? 
    answer choices
    Energy is created and destroyed 
    Energy is never created, nor destroyed-- it always moves 
    Energy moves between particles
    Energy stops moving at the end of the universe 
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