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Chapter 3: Matter — Properties and Changes

Practice Test
  1.Which of the following is a pure substance?  
  a.   gun powder  
  b.   soda  
  c.   steam  
  d.   sugar water  
  2.Periods are ___________ on the periodic table.  
  a.   vertical columns  
  b.   horizontal rows  
  c.   right to left diagonals  
  d.   left to right diagonals  
  3.A material that cannot be broken down further by chemical means is a(n) ________.  
  a.   element  
  b.   mixture  
  c.   compound  
  d.   substance  
  4.Seawater is not a substance because __________.  
  a.   it is a liquid  
  b.   it has hydrogen as part of its composition  
  c.   it is salty  
  d.   its composition may be different from sample to sample  
  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.   metals  
  b.   nonmetals  
  c.   compounds  
  d.   metalloids  
  7.Which of the following is not a state of matter?  
  a.   density  
  b.   liquid  
  c.   gas  
  d.   solid  
  8.A solution of solids is a(n)___________.  
  a.   alloy  
  b.   pure metal  
  c.   filtration  
  d.   heterogeneous mixture  
  9.When one substance changes identity, it exhibits a(n) __________.  
  a.   extensive property  
  b.   chemical property  
  c.   intensive property  
  d.   physical property  
  10.A vapor is a _________.  
  a.   solid  
  b.   liquid  
  c.   condensed state  
  d.   gas  
  11.Which of the following is a compound?  
  a.   neon  
  b.   steel  
  c.   crude oil  
  d.   water  
  12.What is the percent by mass of the components of water?  
  a.   89% H, 11% O b.   67% H, 33% O  
  c.   11% H, 89% O d.   33% H, 67% O  
  13.What type of property is observed when milk sours?  
  a.   an extensive property  
  b.   a chemical property  
  c.   a physical property  
  d.   an intensive property  
  14.A characteristic that can be observed or measured without changing the sample’s composition is ________________.  
  a.   chemical property  
  b.   a crystalline property  
  c.   a gaseous property  
  d.   a physical property  
  15.In the following chemical reaction, how do you classify hydrogen and oxygen?
2H2 + O22H2O
  a.   physical changes  
  b.   chemical properties  
  c.   reactants  
  d.   products  
  16.Matter that has a uniform and unchanging composition is a ___________.  
  a.   vapor  
  b.   solid  
  c.   mixture  
  d.   substance  
  17.A technique that uses the differences in boiling point to separate homogeneous mixtures is _________.  
  a.   chromatography  
  b.   distillation  
  c.   filtration  
  d.   crystallization  
  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.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  
  20.Properties that are dependent on the amount of substance present are ________.  
  a.   external properties  
  b.   intensive properties  
  c.   extensive properties  
  d.   chemical properties  

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