When you're ready to print, just click this button: Make Print-Friendly

Quantitative Chemistry

  1.  
    Look at lithium on your periodic table. Lithium has the numbers 3 and 7. The number 3 is the _____________ number.
    A. compound B. atomic C. formula mass D. compound mass
  2.  
    The sum of the relative atomic masses of all the atoms in a formula is called the...
    A. relative atomic mass B. relative formula mass C. Avogadro constant D. significant formula
  3.  
    Amounts of chemicals are often measured in...
    A. moles B. weight C. force D. height
  4.  
    _____________ is the amount of product made in a reaction.
    A. Mass B. Yield C. Atom economy D. Reactive mass
  5.  
    ______________ = mass of product made divided by the maximum theoretical mass of product x 100
    A. Mass yield B. Percentage made C. Percentage yield D. Atom economy
  6.  
    The law of conservation of mass states that ___________ during a chemical reaction
    A. masses cannot move B. masses cannot increase C. masses always increase D. masses cannot be created or destroyed
  7.  
    When magnesium is heated why does its mass appear to increase?
    A. because oxygen is added B. because Nitrogen is added C. because its atomic mass has increased D. because it has been burnt
Answer Key
Hide Answer Key

Quantitative Chemistry (Answer Key)

  1.  
    Look at lithium on your periodic table. Lithium has the numbers 3 and 7. The number 3 is the _____________ number.
    A. compound B. atomic C. formula mass D. compound mass
  2.  
    The sum of the relative atomic masses of all the atoms in a formula is called the...
    A. relative atomic mass B. relative formula mass C. Avogadro constant D. significant formula
  3.  
    Amounts of chemicals are often measured in...
    A. moles B. weight C. force D. height
  4.  
    _____________ is the amount of product made in a reaction.
    A. Mass B. Yield C. Atom economy D. Reactive mass
  5.  
    ______________ = mass of product made divided by the maximum theoretical mass of product x 100
    A. Mass yield B. Percentage made C. Percentage yield D. Atom economy
  6.  
    The law of conservation of mass states that ___________ during a chemical reaction
    A. masses cannot move B. masses cannot increase C. masses always increase D. masses cannot be created or destroyed
  7.  
    When magnesium is heated why does its mass appear to increase?
    A. because oxygen is added B. because Nitrogen is added C. because its atomic mass has increased D. because it has been burnt

When you're ready to print, just click this button: Make Print-Friendly

Quick Feedback for Knowledge Mouse

Want to suggest a feature? Report a problem? Suggest a correction? Please let Knowledge Mouse know below: