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Chapter 3: Matter — Properties and Changes

Practice Test
  1.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  
  2.Seawater is not a substance because __________.  
  a.   it is salty  
  b.   its composition may be different from sample to sample  
  c.   it is a liquid  
  d.   it has hydrogen as part of its composition  
  3.Fe2O3 is a(n) _____________.  
  a.   heterogeneous mixture  
  b.   homogeneous mixture  
  c.   compound  
  d.   element  
  4.In the following chemical reaction, how do you classify hydrogen and oxygen?
2H2 + O22H2O
  a.   products  
  b.   physical changes  
  c.   chemical properties  
  d.   reactants  
  5.How can you tell when the following reaction is balanced?
2Cu + O2 → 2CuO
  a.   volume of reactants = mass of products  
  b.   mass of reactants = volume of products  
  c.   mass of the reactants = mass of products  
  d.   volume of reactants = volume of products  
  6.A form of matter that has a fixed shape and occupies a fixed volume is a _________.  
  a.   liquid  
  b.   plasma  
  c.   gas  
  d.   solid  
  7.Properties that are dependent on the amount of substance present are ________.  
  a.   intensive properties  
  b.   chemical properties  
  c.   extensive properties  
  d.   external properties  
  8.Elements on the left side of the periodic table are _______.  
  a.   metalloids  
  b.   compounds  
  c.   metals  
  d.   nonmetals  
  9.Which of the following is a pure substance?  
  a.   soda  
  b.   steam  
  c.   sugar water  
  d.   gun powder  
  10.What is the percent by mass of the components of water?  
  a.   33% H, 67% O b.   67% H, 33% O  
  c.   89% H, 11% O d.   11% H, 89% O  
  11.How would you read the following chemical reaction?
2Cu + O2 → 2CuO
  a.   copper(II) oxide yields oxygen and copper  
  b.   oxygen yields copper and copper(II) oxide  
  c.   copper and oxygen yield copper(II) oxide  
  d.   copper yields oxygen and copper(II) oxide  
  12.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  
  13.Periods are ___________ on the periodic table.  
  a.   horizontal rows  
  b.   vertical columns  
  c.   left to right diagonals  
  d.   right to left diagonals  
  14.Which of the following is a compound?  
  a.   crude oil  
  b.   neon  
  c.   water  
  d.   steel  
  15.A technique that uses a porous barrier to separate heterogeneous mixtures is _______.  
  a.   filtration  
  b.   distillation  
  c.   crystallization  
  d.   chromatography  
  16.Which of the following is a heterogeneous mixture?  
  a.   sugar  
  b.   samples of argon and iron in the same container  
  c.   samples of nitrogen and oxygen in the same container  
  d.   sugar in water  
  17.Matter that has a uniform and unchanging composition is a ___________.  
  a.   substance  
  b.   vapor  
  c.   solid  
  d.   mixture  
  18.A vapor is a _________.  
  a.   condensed state  
  b.   gas  
  c.   liquid  
  d.   solid  
  19.A solution of solids is a(n)___________.  
  a.   filtration  
  b.   alloy  
  c.   pure metal  
  d.   heterogeneous mixture  
  20.What type of property is observed when milk sours?  
  a.   an intensive property  
  b.   a physical property  
  c.   a chemical property  
  d.   an extensive property  

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