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Chapter 3: Matter — Properties and Changes

Practice Test
  1.A technique that uses a porous barrier to separate heterogeneous mixtures is _______.  
  a.   distillation  
  b.   crystallization  
  c.   filtration  
  d.   chromatography  
  2.A technique that uses the differences in boiling point to separate homogeneous mixtures is _________.  
  a.   chromatography  
  b.   crystallization  
  c.   distillation  
  d.   filtration  
  3.A characteristic that can be observed or measured without changing the sample’s composition is ________________.  
  a.   a physical property  
  b.   a gaseous property  
  c.   chemical property  
  d.   a crystalline property  
  4.Properties that are dependent on the amount of substance present are ________.  
  a.   intensive properties  
  b.   external properties  
  c.   chemical properties  
  d.   extensive properties  
  5.Which of the following is a compound?  
  a.   crude oil  
  b.   neon  
  c.   steel  
  d.   water  
  6.Elements on the left side of the periodic table are _______.  
  a.   metalloids  
  b.   metals  
  c.   compounds  
  d.   nonmetals  
  7.Fe2O3 is a(n) _____________.  
  a.   heterogeneous mixture  
  b.   element  
  c.   compound  
  d.   homogeneous mixture  
  8.A material that cannot be broken down further by chemical means is a(n) ________.  
  a.   element  
  b.   substance  
  c.   mixture  
  d.   compound  
  9.Seawater is not a substance because __________.  
  a.   its composition may be different from sample to sample  
  b.   it is salty  
  c.   it has hydrogen as part of its composition  
  d.   it is a liquid  
  10.A form of matter that has a fixed shape and occupies a fixed volume is a _________.  
  a.   solid  
  b.   liquid  
  c.   plasma  
  d.   gas  
  11.Matter that has a uniform and unchanging composition is a ___________.  
  a.   vapor  
  b.   substance  
  c.   solid  
  d.   mixture  
  12.Which of the following is a heterogeneous mixture?  
  a.   sugar  
  b.   sugar in water  
  c.   samples of nitrogen and oxygen in the same container  
  d.   samples of argon and iron in the same container  
  13.In the following chemical reaction, how do you classify hydrogen and oxygen?
2H2 + O22H2O
  a.   chemical properties  
  b.   physical changes  
  c.   reactants  
  d.   products  
  14.Which of the following is not a state of matter?  
  a.   gas  
  b.   density  
  c.   solid  
  d.   liquid  
  15.Which of the following is not a chemical property?  
  a.   placing iron in hydrochloric acid and producing hydrogen gas  
  b.   freezing of water  
  c.   rusting of iron  
  d.   burning a piece of wood  
  16.A vapor is a _________.  
  a.   gas  
  b.   liquid  
  c.   condensed state  
  d.   solid  
  17.Which of the following is a pure substance?  
  a.   gun powder  
  b.   sugar water  
  c.   steam  
  d.   soda  
  18.Periods are ___________ on the periodic table.  
  a.   right to left diagonals  
  b.   left to right diagonals  
  c.   horizontal rows  
  d.   vertical columns  
  19.What is the percent by mass of the components of water?  
  a.   67% H, 33% O b.   33% H, 67% O  
  c.   11% H, 89% O d.   89% H, 11% O  
  20.The statement, “Mass can neither be created nor destroyed” is the ____________.  
  a.   law of multiple proportions  
  b.   law of conservation of energy  
  c.   law of gravity  
  d.   law of conservation of mass  

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