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Chapter 3: Matter — Properties and Changes

Practice Test
  1.A form of matter that has a fixed shape and occupies a fixed volume is a _________.  
  a.   solid  
  b.   liquid  
  c.   gas  
  d.   plasma  
  2.A characteristic that can be observed or measured without changing the sample’s composition is ________________.  
  a.   a gaseous property  
  b.   chemical property  
  c.   a crystalline property  
  d.   a physical property  
  3.A vapor is a _________.  
  a.   condensed state  
  b.   solid  
  c.   gas  
  d.   liquid  
  4.Which of the following is not a state of matter?  
  a.   density  
  b.   gas  
  c.   solid  
  d.   liquid  
  5.Periods are ___________ on the periodic table.  
  a.   horizontal rows  
  b.   vertical columns  
  c.   left to right diagonals  
  d.   right to left diagonals  
  6.How would you read the following chemical reaction?
2Cu + O2 → 2CuO
  a.   oxygen yields copper and copper(II) oxide  
  b.   copper(II) oxide yields oxygen and copper  
  c.   copper and oxygen yield copper(II) oxide  
  d.   copper yields oxygen and copper(II) oxide  
  7.Which of the following is not a chemical property?  
  a.   placing iron in hydrochloric acid and producing hydrogen gas  
  b.   burning a piece of wood  
  c.   rusting of iron  
  d.   freezing of water  
  8.How can you tell when the following reaction is balanced?
2Cu + O2 → 2CuO
  a.   mass of the reactants = mass of products  
  b.   volume of reactants = volume of products  
  c.   volume of reactants = mass of products  
  d.   mass of reactants = volume of products  
  9.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  
  10.Which of the following is a pure substance?  
  a.   steam  
  b.   sugar water  
  c.   soda  
  d.   gun powder  
  11.Fe2O3 is a(n) _____________.  
  a.   heterogeneous mixture  
  b.   compound  
  c.   homogeneous mixture  
  d.   element  
  12.The statement, “Mass can neither be created nor destroyed” is the ____________.  
  a.   law of gravity  
  b.   law of conservation of energy  
  c.   law of conservation of mass  
  d.   law of multiple proportions  
  13.Which of the following is a heterogeneous mixture?  
  a.   sugar  
  b.   samples of nitrogen and oxygen in the same container  
  c.   sugar in water  
  d.   samples of argon and iron in the same container  
  14.A technique that uses the differences in boiling point to separate homogeneous mixtures is _________.  
  a.   crystallization  
  b.   distillation  
  c.   filtration  
  d.   chromatography  
  15.A solution of solids is a(n)___________.  
  a.   alloy  
  b.   heterogeneous mixture  
  c.   filtration  
  d.   pure metal  
  16.In the following chemical reaction, how do you classify hydrogen and oxygen?
2H2 + O22H2O
  a.   chemical properties  
  b.   physical changes  
  c.   reactants  
  d.   products  
  17.When one substance changes identity, it exhibits a(n) __________.  
  a.   intensive property  
  b.   extensive property  
  c.   physical property  
  d.   chemical property  
  18.A technique that uses a porous barrier to separate heterogeneous mixtures is _______.  
  a.   filtration  
  b.   chromatography  
  c.   distillation  
  d.   crystallization  
  19.Which of the following is a compound?  
  a.   water  
  b.   crude oil  
  c.   neon  
  d.   steel  
  20.Matter that has a uniform and unchanging composition is a ___________.  
  a.   mixture  
  b.   vapor  
  c.   substance  
  d.   solid  

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