Homogeneous Solution Quiz Questions

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Homogeneous Quizzes & Trivia

Objectives review for final exam.


Questions and Answers
  • 1. 
              For the following chemical equation _ Na + _ O2 --> _ Na2O2,   the coefficients that balance the equation are:
    • A. 

      1,1,1

    • B. 

      2,1,1

    • C. 

      2,2,2

    • D. 

      2,1,2

  • 2. 
               Water is referred to as the universal solvent because
    • A. 

      It is found throughout the universe.

    • B. 

      All known substances dissolve in water.

    • C. 

      Many different substances dissolve in water.

    • D. 

      It covers more than half of the Earth's surface.

  • 3. 
               Which of the following is a homogeneous mixture?
    • A. 

      Salad dressing

    • B. 

      Gelatin

    • C. 

      Rubbing alcohol

    • D. 

      Orange juice with pulp

  • 4. 
              A heterogeneous mixture is one that is not
    • A. 

      Uniform throughout.

    • B. 

      Easily mixed together.

    • C. 

      Made of two or more liquids.

    • D. 

      Edible by humans.

  • 5. 
              Which of the following is an example of a heterogeneous mixture?
    • A. 

      Salt water

    • B. 

      Vinegar

    • C. 

      Sugar solution

    • D. 

      Mayonnaise

  • 6. 
               The equation identifies the ___________ (starting materials) and _______________(resulting substance),
    • A. 

      Products, reactants

    • B. 

      Reactants, phases

    • C. 

      Reactants, products

    • D. 

      Reactants, formulas

  • 7. 
                    In a balanced chemical reaction, the total mass of the products always equals the
    • A. 

      Molar mass of reactants

    • B. 

      Atomic mass of reactants

    • C. 

      Total mass of reactants

    • D. 

      Proportional masses of the reactants

  • 8. 
                 In the reaction 2H2O ---.>2H2 + O2, if you start with 2 mol of water, how many moles of hydrogen gas are produced?
    • A. 

      1 mol

    • B. 

      2 mol

    • C. 

      3 mol

    • D. 

      4 mol

  • 9. 
    A balanced chemical equation shows the proportions of reactants and products necessary for
    • A. 

      The reaction to occur.

    • B. 

      Mass to be conserved

    • C. 

      Energy use to be minimized.

    • D. 

      Electrolysis to occur

  • 10. 
               Which of the following is an example of a decomposition reaction?
    • A. 

      Photosynthesis

    • B. 

      Digestion

    • C. 

      Respiration

    • D. 

      Exchange of ions between two compounds

  • 11. 
                  What kind of reaction occurs when potassium is placed in water?  K + H2O ---- KOH + H2
    • A. 

      Single displacement reaction

    • B. 

      Double displacement reaction

    • C. 

      A decomposition reaction

    • D. 

      Electrolysis

  • 12. 
              A synthesis reaction is a reaction between at least two compounds in which
    • A. 

      One breaks down into at least two products.

    • B. 

      A compound is decomposed by an electric current.

    • C. 

      A compound burns in the presence of oxygen.

    • D. 

      A new, more complex compound is formed.

  • 13. 
              What happens in a chemical reaction?
    • A. 

      Atoms are destroyed

    • B. 

      Atoms are created

    • C. 

      Atoms are heated or cooled

    • D. 

      Atoms are rearranged

  • 14. 
               Covalent bonds are formed between
    • A. 

      Iones

    • B. 

      Metal atoms

    • C. 

      Nonmetal atoms

    • D. 

      Compounds

  • 15. 
              An ionic bond is a bond that forms between
    • A. 

      Atoms with opposite charges

    • B. 

      Atoms with neutral charge

    • C. 

      One atom's nucleus and another atom's electrons.

    • D. 

      The electrons of two different atoms

  • 16. 
              Each molecule of table sugar, C12H22O11, contains
    • A. 

      0 atoms of carbon

    • B. 

      11 atoms of carbon

    • C. 

      6 atoms of carbon

    • D. 

      12 atoms of carbon

  • 17. 
                A compound differs from a mixture because it
    • A. 

      Always remains frozen even at high temperatures.

    • B. 

      Is formed from two cations.

    • C. 

      Always contains the same elements in the same proportion.

    • D. 

      Can form only in the presence of heat energy.

  • 18. 
               An atom's mass number equals the number of
    • A. 

      Protons plus the number of electrons

    • B. 

      Protons plus the number of neutrons

    • C. 

      Protons

    • D. 

      Neutrons

  • 19. 
              Grinding quartz crystals down to produce sand is an example of a
    • A. 

      Change of state

    • B. 

      Chemical change

    • C. 

      Chemical reaction

    • D. 

      Physical change

  • 20. 
                   Lead has a density of 11.3 g/cm3. What is the volume of a block of lead with a mass of 282.5 g?
    • A. 

      2.5cm3.

    • B. 

      25cm3.

    • C. 

      250cm3.

    • D. 

      2500cm3.