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Chapter 3: Matter — Properties and Changes

Practice Test
  1.A vapor is a _________.  
  a.   liquid  
  b.   condensed state  
  c.   gas  
  d.   solid  
  2.Which of the following is not a chemical property?  
  a.   burning a piece of wood  
  b.   freezing of water  
  c.   placing iron in hydrochloric acid and producing hydrogen gas  
  d.   rusting of iron  
  3.A technique that uses the differences in boiling point to separate homogeneous mixtures is _________.  
  a.   filtration  
  b.   crystallization  
  c.   distillation  
  d.   chromatography  
  4.A technique that uses a porous barrier to separate heterogeneous mixtures is _______.  
  a.   filtration  
  b.   chromatography  
  c.   crystallization  
  d.   distillation  
  5.The statement, “Mass can neither be created nor destroyed” is the ____________.  
  a.   law of conservation of mass  
  b.   law of conservation of energy  
  c.   law of gravity  
  d.   law of multiple proportions  
  6.What is the percent by mass of the components of water?  
  a.   89% H, 11% O b.   11% H, 89% O  
  c.   33% H, 67% O d.   67% H, 33% O  
  7.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.   volume of reactants = mass of products  
  d.   mass of the reactants = mass of products  
  8.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  
  9.Elements on the left side of the periodic table are _______.  
  a.   nonmetals  
  b.   compounds  
  c.   metalloids  
  d.   metals  
  10.How would you read the following chemical reaction?
2Cu + O2 → 2CuO
  a.   copper and oxygen yield copper(II) oxide  
  b.   copper yields oxygen and copper(II) oxide  
  c.   oxygen yields copper and copper(II) oxide  
  d.   copper(II) oxide yields oxygen and copper  
  11.A solution of solids is a(n)___________.  
  a.   filtration  
  b.   heterogeneous mixture  
  c.   pure metal  
  d.   alloy  
  12.In the following chemical reaction, how do you classify hydrogen and oxygen?
2H2 + O22H2O
  a.   chemical properties  
  b.   physical changes  
  c.   reactants  
  d.   products  
  13.Periods are ___________ on the periodic table.  
  a.   vertical columns  
  b.   horizontal rows  
  c.   left to right diagonals  
  d.   right to left diagonals  
  14.Seawater is not a substance because __________.  
  a.   it is a liquid  
  b.   it has hydrogen as part of its composition  
  c.   its composition may be different from sample to sample  
  d.   it is salty  
  15.Properties that are dependent on the amount of substance present are ________.  
  a.   intensive properties  
  b.   extensive properties  
  c.   external properties  
  d.   chemical properties  
  16.A form of matter that has a fixed shape and occupies a fixed volume is a _________.  
  a.   plasma  
  b.   gas  
  c.   liquid  
  d.   solid  
  17.Matter that has a uniform and unchanging composition is a ___________.  
  a.   vapor  
  b.   solid  
  c.   substance  
  d.   mixture  
  18.Which of the following is a pure substance?  
  a.   steam  
  b.   sugar water  
  c.   gun powder  
  d.   soda  
  19.A material that cannot be broken down further by chemical means is a(n) ________.  
  a.   compound  
  b.   mixture  
  c.   element  
  d.   substance  
  20.Which of the following is not a state of matter?  
  a.   gas  
  b.   solid  
  c.   liquid  
  d.   density  

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