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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.   gas  
  c.   liquid  
  d.   plasma  
  2.How would you read the following chemical reaction?
2Cu + O2 → 2CuO
  a.   copper and oxygen yield copper(II) oxide  
  b.   oxygen yields copper and copper(II) oxide  
  c.   copper yields oxygen and copper(II) oxide  
  d.   copper(II) oxide yields oxygen and copper  
  3.A solution of solids is a(n)___________.  
  a.   heterogeneous mixture  
  b.   filtration  
  c.   alloy  
  d.   pure metal  
  4.A characteristic that can be observed or measured without changing the sample’s composition is ________________.  
  a.   a crystalline property  
  b.   a gaseous property  
  c.   chemical property  
  d.   a physical property  
  5.Fe2O3 is a(n) _____________.  
  a.   homogeneous mixture  
  b.   element  
  c.   compound  
  d.   heterogeneous mixture  
  6.Elements on the left side of the periodic table are _______.  
  a.   metalloids  
  b.   nonmetals  
  c.   metals  
  d.   compounds  
  7.A material that cannot be broken down further by chemical means is a(n) ________.  
  a.   mixture  
  b.   substance  
  c.   compound  
  d.   element  
  8.How can you tell when the following reaction is balanced?
2Cu + O2 → 2CuO
  a.   volume of reactants = volume of products  
  b.   volume of reactants = mass of products  
  c.   mass of the reactants = mass of products  
  d.   mass of reactants = volume of products  
  9.Properties that are dependent on the amount of substance present are ________.  
  a.   extensive properties  
  b.   chemical properties  
  c.   intensive properties  
  d.   external properties  
  10.In the following chemical reaction, how do you classify hydrogen and oxygen?
2H2 + O22H2O
  a.   physical changes  
  b.   reactants  
  c.   products  
  d.   chemical properties  
  11.Which of the following is a pure substance?  
  a.   sugar water  
  b.   soda  
  c.   steam  
  d.   gun powder  
  12.A technique that uses the differences in boiling point to separate homogeneous mixtures is _________.  
  a.   crystallization  
  b.   distillation  
  c.   filtration  
  d.   chromatography  
  13.Which of the following is not a chemical property?  
  a.   rusting of iron  
  b.   burning a piece of wood  
  c.   freezing of water  
  d.   placing iron in hydrochloric acid and producing hydrogen gas  
  14.The statement, “Mass can neither be created nor destroyed” is the ____________.  
  a.   law of multiple proportions  
  b.   law of gravity  
  c.   law of conservation of mass  
  d.   law of conservation of energy  
  15.What is the percent by mass of the components of water?  
  a.   67% H, 33% O b.   11% H, 89% O  
  c.   89% H, 11% O d.   33% H, 67% O  
  16.Which of the following is not a state of matter?  
  a.   solid  
  b.   gas  
  c.   liquid  
  d.   density  
  17.Seawater is not a substance because __________.  
  a.   it is salty  
  b.   it is a liquid  
  c.   its composition may be different from sample to sample  
  d.   it has hydrogen as part of its composition  
  18.Which of the following is a heterogeneous mixture?  
  a.   samples of argon and iron in the same container  
  b.   sugar in water  
  c.   sugar  
  d.   samples of nitrogen and oxygen in the same container  
  19.A vapor is a _________.  
  a.   condensed state  
  b.   gas  
  c.   liquid  
  d.   solid  
  20.Periods are ___________ on the periodic table.  
  a.   vertical columns  
  b.   right to left diagonals  
  c.   left to right diagonals  
  d.   horizontal rows  

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