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Chapter 3: Matter — Properties and Changes

Practice Test
  1.Elements on the left side of the periodic table are _______.  
  a.   nonmetals  
  b.   metalloids  
  c.   metals  
  d.   compounds  
  2.A material that cannot be broken down further by chemical means is a(n) ________.  
  a.   mixture  
  b.   substance  
  c.   element  
  d.   compound  
  3.When one substance changes identity, it exhibits a(n) __________.  
  a.   intensive property  
  b.   chemical property  
  c.   extensive property  
  d.   physical property  
  4.A vapor is a _________.  
  a.   condensed state  
  b.   liquid  
  c.   solid  
  d.   gas  
  5.How would you read the following chemical reaction?
2Cu + O2 → 2CuO
  a.   copper yields oxygen and copper(II) oxide  
  b.   copper(II) oxide yields oxygen and copper  
  c.   copper and oxygen yield copper(II) oxide  
  d.   oxygen yields copper and copper(II) oxide  
  6.Matter that has a uniform and unchanging composition is a ___________.  
  a.   vapor  
  b.   solid  
  c.   substance  
  d.   mixture  
  7.A technique that uses a porous barrier to separate heterogeneous mixtures is _______.  
  a.   distillation  
  b.   crystallization  
  c.   chromatography  
  d.   filtration  
  8.Fe2O3 is a(n) _____________.  
  a.   compound  
  b.   homogeneous mixture  
  c.   heterogeneous mixture  
  d.   element  
  9.A solution of solids is a(n)___________.  
  a.   filtration  
  b.   pure metal  
  c.   heterogeneous mixture  
  d.   alloy  
  10.A technique that uses the differences in boiling point to separate homogeneous mixtures is _________.  
  a.   chromatography  
  b.   crystallization  
  c.   distillation  
  d.   filtration  
  11.In the following chemical reaction, how do you classify hydrogen and oxygen?
2H2 + O22H2O
  a.   products  
  b.   reactants  
  c.   chemical properties  
  d.   physical changes  
  12.Properties that are dependent on the amount of substance present are ________.  
  a.   chemical properties  
  b.   intensive properties  
  c.   extensive properties  
  d.   external properties  
  13.The statement, “Mass can neither be created nor destroyed” is the ____________.  
  a.   law of conservation of mass  
  b.   law of gravity  
  c.   law of conservation of energy  
  d.   law of multiple proportions  
  14.Which of the following is not a state of matter?  
  a.   liquid  
  b.   gas  
  c.   solid  
  d.   density  
  15.Seawater is not a substance because __________.  
  a.   it has hydrogen as part of its composition  
  b.   its composition may be different from sample to sample  
  c.   it is a liquid  
  d.   it is salty  
  16.Which of the following is a pure substance?  
  a.   sugar water  
  b.   soda  
  c.   gun powder  
  d.   steam  
  17.What is the percent by mass of the components of water?  
  a.   67% H, 33% O b.   11% H, 89% O  
  c.   33% H, 67% O d.   89% H, 11% O  
  18.How can you tell when the following reaction is balanced?
2Cu + O2 → 2CuO
  a.   volume of reactants = volume of products  
  b.   mass of reactants = volume of products  
  c.   volume of reactants = mass of products  
  d.   mass of the reactants = mass of products  
  19.Which of the following is a compound?  
  a.   steel  
  b.   crude oil  
  c.   neon  
  d.   water  
  20.A form of matter that has a fixed shape and occupies a fixed volume is a _________.  
  a.   gas  
  b.   plasma  
  c.   solid  
  d.   liquid  

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