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Chapter 3: Matter — Properties and Changes

Practice Test
  1.Seawater is not a substance because __________.  
  a.   its composition may be different from sample to sample  
  b.   it is a liquid  
  c.   it has hydrogen as part of its composition  
  d.   it is salty  
  2.A solution of solids is a(n)___________.  
  a.   alloy  
  b.   filtration  
  c.   pure metal  
  d.   heterogeneous mixture  
  3.Fe2O3 is a(n) _____________.  
  a.   homogeneous mixture  
  b.   compound  
  c.   element  
  d.   heterogeneous mixture  
  4.Which of the following is a heterogeneous mixture?  
  a.   samples of argon and iron in the same container  
  b.   samples of nitrogen and oxygen in the same container  
  c.   sugar in water  
  d.   sugar  
  5.In the following chemical reaction, how do you classify hydrogen and oxygen?
2H2 + O22H2O
  a.   physical changes  
  b.   products  
  c.   reactants  
  d.   chemical properties  
  6.Which of the following is not a state of matter?  
  a.   solid  
  b.   liquid  
  c.   gas  
  d.   density  
  7.Periods are ___________ on the periodic table.  
  a.   vertical columns  
  b.   horizontal rows  
  c.   left to right diagonals  
  d.   right to left diagonals  
  8.What type of property is observed when milk sours?  
  a.   a chemical property  
  b.   an extensive property  
  c.   a physical property  
  d.   an intensive property  
  9.A characteristic that can be observed or measured without changing the sample’s composition is ________________.  
  a.   a gaseous property  
  b.   a physical property  
  c.   chemical property  
  d.   a crystalline property  
  10.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  
  11.Elements on the left side of the periodic table are _______.  
  a.   metalloids  
  b.   metals  
  c.   compounds  
  d.   nonmetals  
  12.A material that cannot be broken down further by chemical means is a(n) ________.  
  a.   compound  
  b.   substance  
  c.   element  
  d.   mixture  
  13.A technique that uses the differences in boiling point to separate homogeneous mixtures is _________.  
  a.   crystallization  
  b.   chromatography  
  c.   distillation  
  d.   filtration  
  14.A vapor is a _________.  
  a.   gas  
  b.   solid  
  c.   liquid  
  d.   condensed state  
  15.Properties that are dependent on the amount of substance present are ________.  
  a.   external properties  
  b.   intensive properties  
  c.   chemical properties  
  d.   extensive properties  
  16.Which of the following is a pure substance?  
  a.   soda  
  b.   steam  
  c.   gun powder  
  d.   sugar water  
  17.Which of the following is not a chemical property?  
  a.   placing iron in hydrochloric acid and producing hydrogen gas  
  b.   freezing of water  
  c.   burning a piece of wood  
  d.   rusting of iron  
  18.Which of the following is a compound?  
  a.   neon  
  b.   water  
  c.   crude oil  
  d.   steel  
  19.A form of matter that has a fixed shape and occupies a fixed volume is a _________.  
  a.   solid  
  b.   liquid  
  c.   plasma  
  d.   gas  
  20.How would you read the following chemical reaction?
2Cu + O2 → 2CuO
  a.   copper yields oxygen and copper(II) oxide  
  b.   copper(II) oxide yields oxygen and copper  
  c.   copper and oxygen yield copper(II) oxide  
  d.   oxygen yields copper and copper(II) oxide  

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