Chemical Reactions/equations Test

13 Questions

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Chemical Reactions/equations Test


Questions and Answers
  • 1. 
    What is chemistry?
    • A. 

      The study of matter and show matter change

    • B. 

      The study of the properties of matter and how matter change

    • C. 

      None above

    • D. 

      The study of ice melting from one point to other

  • 2. 
    Chemical Equations Are used to describe Chemical Equations
    • A. 

      True

    • B. 

      False

  • 3. 
    What are  types of chemical reaction from following options?
    • A. 

      Synthesis,Decomposition,single replacement,double replacement

    • B. 

      Decomposition,Synthesis, and Single replacement

    • C. 

      Decomposition

    • D. 

      All Above

  • 4. 
    What Makes Chemical Equations Balanced?
    • A. 

      Same Number of atoms of each element in both side of reaction

    • B. 

      Same number of molecues in atoms

    • C. 

      Same number of chemical reaction

    • D. 

      None above

  • 5. 
    What is chemical formula?
    • A. 

      A chemical symbol that has symbol

    • B. 

      Tells the number of atoms of each element a compound . Subscrpit tells number of element in a molecues

    • C. 

      Tells the number of atoms in chemical reaction

    • D. 

      All Above

  • 6. 
    What is the LAW of Conservation of Mass?
    • A. 

      CAN DESTORY OR CREATED

    • B. 

      Chemical equation must be balanced because matter cannot be created or destoryed.

    • C. 

      Cannot be created or destorey

    • D. 

      Chemical equations

  • 7. 
    WHAT IS COEFFICIENT?
    • A. 

      The number in front of an atom tells you how many atom there are in each molecues reaction

    • B. 

      The number of atoms in reaction

    • C. 

      Chemical Reactions can be also define as Cofficient?

    • D. 

      What is ZChemcial REqaction

  • 8. 
    WHAT is the Coefficient?N2 + H2 <(Makes) NH3
  • 9. 
    Is A + B = AB  A SYNTHESIS REACTION
    • A. 

      True

    • B. 

      False

  • 10. 
    WHAT IS THE DIFFERENT BETWEEN A SYNTHESIS REACTIONS AND DECOMPOSITION REACTIONS?
    • A. 

      SYNTHESIS IS TO MAKE OR COMBINE

    • B. 

      DECOMPOSITION IS TO BREAK DOWN

    • C. 

      THEY ARE OPPOSITE OF EACH OTHERS

    • D. 

      ALL ABOVE

  • 11. 
    • A. 

      True

    • B. 

      False

  • 12. 
    BOUNS QUESTION: CAN CHEMICAL EQUATIONS BE NOT EQUAL
    • A. 

      True

    • B. 

      False