Law of Conservation of Mass
3 years ago
rjunio
Save
Edit
Host a game
Live GameLive
Homework
Solo Practice
Practice
10 QuestionsShow answers
  • Question 1
    60 seconds
    Q. How many elements does PbNO3 have?
    answer choices
    2
    3
    4
    5
  • Question 2
    60 seconds
    Q. How many nitrogen atoms does NH3 have?
    answer choices
    1
    2
    3
    4
  • Question 3
    60 seconds
    Q. A chemical equation tells us 
    answer choices
    the reactants and the products.
    the elements that make up the reactants and the products.
    the number of atoms that make up the reactants and the products.
    All of the above.
  • Question 4
    60 seconds
    Q. What is the reactant in the following equation?
    2NaHCO3  -> Na2CO3  +  CO2  + H2O
    answer choices
    NaHCO3
    Na2CO3
    CO2
    H2O
  • Question 5
    60 seconds
    Q. Which of the following describes the law of conservation of mass?
    answer choices
    In a reaction, atoms are created or destroyed.
    In a reaction, atoms are not lost or made.
    In a reaction, the mass of the product may be more or less than the reactants.
    In a reaction, mass never stays the same.
  • Question 6
    60 seconds
    Q. For the equation:
    2H2 +  O2 --> 2H2O
    How much H2O will be produced using only one O2?
    answer choices
    1/2
    1
    2
    4
  • Question 7
    60 seconds
    Q. For the equation:
    2H2 +  O2 --> 2H2O
    How much H2O will be produced if we react 4g of H2 and 32g of O2?
    answer choices
    4g
    32g
    36g
    28g
  • Question 8
    120 seconds
    Q. Which  of the following is a balanced equation?
    answer choices
    Na   +   Cl2   -->  NaCl
    H2  +  O2  --> H2O
    Ca   +   Br  -->  CaBr2
    Na   +  F  -->  NaF
  • Question 9
    60 seconds
    Q. What will happen to the mass of the product if I double the mass of the reactants?
    answer choices
    It will decrease by half.
    It will increase by half.
    It will double in amount.
    The mass remains the same.
  • Question 10
    120 seconds
    Q. Balance the following equation:
    __N2  +  __H2  -->  __NH3
    answer choices
    N2  +  3H2  --> 2NH3
    2N2  +  3H2  --> NH3
    3N2  +  2H2  --> 2NH3
    N2  +  H2  --> NH3
Report Quiz
Join a game