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Chapter 3: Matter — Properties and Changes

Practice Test
  1.What type of property is observed when milk sours?  
  a.   an extensive property  
  b.   an intensive property  
  c.   a physical property  
  d.   a chemical property  
  2.A material that cannot be broken down further by chemical means is a(n) ________.  
  a.   element  
  b.   compound  
  c.   mixture  
  d.   substance  
  3.What is the percent by mass of the components of water?  
  a.   11% H, 89% O b.   67% H, 33% O  
  c.   33% H, 67% O d.   89% H, 11% O  
  4.A characteristic that can be observed or measured without changing the sample’s composition is ________________.  
  a.   a gaseous property  
  b.   a crystalline property  
  c.   a physical property  
  d.   chemical property  
  5.Properties that are dependent on the amount of substance present are ________.  
  a.   chemical properties  
  b.   external properties  
  c.   extensive properties  
  d.   intensive properties  
  6.The statement, “Mass can neither be created nor destroyed” is the ____________.  
  a.   law of conservation of energy  
  b.   law of gravity  
  c.   law of conservation of mass  
  d.   law of multiple proportions  
  7.Matter that has a uniform and unchanging composition is a ___________.  
  a.   substance  
  b.   vapor  
  c.   mixture  
  d.   solid  
  8.Which of the following is a heterogeneous mixture?  
  a.   sugar in water  
  b.   samples of argon and iron in the same container  
  c.   sugar  
  d.   samples of nitrogen and oxygen in the same container  
  9.Periods are ___________ on the periodic table.  
  a.   horizontal rows  
  b.   left to right diagonals  
  c.   vertical columns  
  d.   right to left diagonals  
  10.A form of matter that has a fixed shape and occupies a fixed volume is a _________.  
  a.   solid  
  b.   liquid  
  c.   plasma  
  d.   gas  
  11.Which of the following is a pure substance?  
  a.   gun powder  
  b.   sugar water  
  c.   soda  
  d.   steam  
  12.A vapor is a _________.  
  a.   solid  
  b.   liquid  
  c.   condensed state  
  d.   gas  
  13.When one substance changes identity, it exhibits a(n) __________.  
  a.   physical property  
  b.   chemical property  
  c.   extensive property  
  d.   intensive property  
  14.A technique that uses a porous barrier to separate heterogeneous mixtures is _______.  
  a.   filtration  
  b.   chromatography  
  c.   crystallization  
  d.   distillation  
  15.A technique that uses the differences in boiling point to separate homogeneous mixtures is _________.  
  a.   crystallization  
  b.   filtration  
  c.   chromatography  
  d.   distillation  
  16.Which of the following is not a state of matter?  
  a.   liquid  
  b.   solid  
  c.   gas  
  d.   density  
  17.In the following chemical reaction, how do you classify hydrogen and oxygen?
2H2 + O22H2O
  a.   chemical properties  
  b.   physical changes  
  c.   reactants  
  d.   products  
  18.Which of the following is a compound?  
  a.   crude oil  
  b.   steel  
  c.   water  
  d.   neon  
  19.How can you tell when the following reaction is balanced?
2Cu + O2 → 2CuO
  a.   mass of reactants = volume of products  
  b.   volume of reactants = mass of products  
  c.   mass of the reactants = mass of products  
  d.   volume of reactants = volume of products  
  20.Seawater is not a substance because __________.  
  a.   it is a liquid  
  b.   its composition may be different from sample to sample  
  c.   it has hydrogen as part of its composition  
  d.   it is salty  

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