Chemical Changes - Unit E Ch. 2 Lesson 2

  1.  
    A sign that will let you know if a chemical change has occurred.
    A. properties B. wood C. bending D. color
  2.  
    The ability to burn is called...
    A. mass B. texture C. stability D. combustibility
  3.  
    List 3 objects that are high combustible.
    A. water,sound and smell B. wood, charcoal and paper C. steel, gold and iron D. mass, volume and matter
  4.  
    Chemical changes in burning produces....
    A. air B. energy C. water D. volume
  5.  
    Chemical reactions that absorb energy from surroundings is known as?
    A. endothermic reaction B. ductility C. malleability D. density
  6.  
    What type of reaction is an exothermic reaction in which a substance combines with oxygen?
    A. chemical reaction B. physical reaction C. combustion reaction D. stability
  7.  
    Give an example of a combustion reaction.
    A. floating B. raining C. fire D. lightning
Answer Key
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Chemical Changes - Unit E Ch. 2 Lesson 2 (Answer Key)

  1.  
    A sign that will let you know if a chemical change has occurred.
    A. properties B. wood C. bending D. color
  2.  
    The ability to burn is called...
    A. mass B. texture C. stability D. combustibility
  3.  
    List 3 objects that are high combustible.
    A. water,sound and smell B. wood, charcoal and paper C. steel, gold and iron D. mass, volume and matter
  4.  
    Chemical changes in burning produces....
    A. air B. energy C. water D. volume
  5.  
    Chemical reactions that absorb energy from surroundings is known as?
    A. endothermic reaction B. ductility C. malleability D. density
  6.  
    What type of reaction is an exothermic reaction in which a substance combines with oxygen?
    A. chemical reaction B. physical reaction C. combustion reaction D. stability
  7.  
    Give an example of a combustion reaction.
    A. floating B. raining C. fire D. lightning

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