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Chapter 3: Matter — Properties and Changes

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

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