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Chapter 3: Matter — Properties and Changes

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

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