Chemical Reaction Of Respiration Quiz

21 Questions | Total Attempts: 215

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Chemical Reaction Quizzes & Trivia

In this quiz, you will get to learn about the chemical reactions. Play this quiz and test your knowledge on this!


Questions and Answers
  • 1. 
    What type of reaction is FeS + 2HCl --> FeCl2 + H2S
    • A. 

      Synthesis

    • B. 

      Decomposition

    • C. 

      Physical

    • D. 

      Replacement

  • 2. 
    In a chemical equation numbers often appear in front of a chemical formula.  These numbers tell you the
    • A. 

      Number of atoms in each molecule in the reaction

    • B. 

      Number of elements in the reaction

    • C. 

      Number of molecules or atoms of each substance in the reaction

    • D. 

      Number of molecules in each atom in the reaction

  • 3. 
    Chemistry is...
    • A. 

      A characteristic of substance that can be observed without changing the substance into another substance

    • B. 

      The study of matter an how matter changes

    • C. 

      Anything that has mass and takes up space

    • D. 

      A rapid reaction between oxygen and a substance called a fuel

  • 4. 
    A chemical reaction that absorbs energy in the form of heat is described as
    • A. 

      Endothermic

    • B. 

      Exothermic

    • C. 

      Combustion

    • D. 

      Unbalanced

  • 5. 
    The substances listed on the left side of a chemical equation are the
    • A. 

      Products

    • B. 

      Coefficients

    • C. 

      Precipitates

    • D. 

      Reactants

  • 6. 
    Which two processes could be considered opposites?
    • A. 

      Decomposition and replacement

    • B. 

      Replacement and precipitate

    • C. 

      Precipitate and synthesis

    • D. 

      Synthesis and decomposition

  • 7. 
    Which group contains the most elements?
    • A. 

      Metalloids

    • B. 

      Nonmetals

    • C. 

      Metals

    • D. 

      Transition elements

  • 8. 
    Every chemical reaction involves a change in
    • A. 

      Mass

    • B. 

      Energy

    • C. 

      Concentration

    • D. 

      State

  • 9. 
    The number placed below an element's symbol in a chemical formula is called a
    • A. 

      Subscript

    • B. 

      Coefficient

    • C. 

      Reactant

    • D. 

      Product

  • 10. 
    CaCO3  represents a chemical ...
    • A. 

      Symbol

    • B. 

      Formula

    • C. 

      Subscript

    • D. 

      Reaction

  • 11. 
    The only sure evidence for a chemical reaction is
    • A. 

      The formation of a gas

    • B. 

      A color change

    • C. 

      The production of one or more new substances

    • D. 

      Changes in properties

  • 12. 
    The principle of conservation of mass is true...
    • A. 

      Only for reactions that take place in open systems

    • B. 

      Only for reactions that take place in closed systems

    • C. 

      For all reactions

    • D. 

      For no reactions

  • 13. 
    What happens when chemical bonds break and new bonds form
    • A. 

      A physical change

    • B. 

      A chemical reaction

    • C. 

      Matter is destroyed

    • D. 

      Surface area increases

  • 14. 
    A chemical equation that shows the same number of each kind of atom on both sides of the equation is said to be....
    • A. 

      Balanced

    • B. 

      Unbalanced

    • C. 

      An incomplete reaction

    • D. 

      A replacement reaction

  • 15. 
    From an element's location in the periodic table you can predict
    • A. 

      Its properties

    • B. 

      Name

  • 16. 
    In chemical reactions, what does the principle of conservation of mass mean?
    • A. 

      Matter is not created or destroyed

    • B. 

      The total mass of the reactants is greater than the total mass of the products

    • C. 

      The total mass of the reactants is less than the total mass of the products

    • D. 

      Matter can never be changed

  • 17. 
    What type of chemical reaction is represented in the reaction            ____ N2 + __3__ H2 à ___2_ NH3
    • A. 

      Synthesis

    • B. 

      Decomposition

    • C. 

      Replacement

    • D. 

      Combustion

  • 18. 
    2 H2 +  O2 à ____ H2O
  • 19. 
    2  Ag2O à ____ Ag +  O2
  • 20. 
    What are the reactants in the following equations           2   H2O + O2 à 2 H2O2
    • A. 

      Water and oxygen

    • B. 

      Hydrogen peroxide

    • C. 

      Carbon dioxide

    • D. 

      Oxygen

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