ELECTROLYTES AND NON-ELECTROLYTES QUIZ Part II

QUIZ FOR YOU 

11.  A non polar compound cannot dissolve into water, because ….

a.    It has no ions

b.    It consists of molecules

c.    It has a low density

d.    It is a stable particle

e.    It is a neutral molecule

12.  As a solvent, water forms a shell around the solute particle holding it in solution. The solute particles are ….

a.    atoms                   

b.    ions              

c.    elements

d.    covalent compound

e.    non polar molecules                     

13.  The process by which charged solute particles become surrounded by water molecules attracted to the charge of the solute particle is called ….

a.    solution                 

b.    solvation  

c.    diluting                  

d.    dissolving

e.    evaporation

14.  Aqueous solutions are solutions in which water

a.    is the solvent                    

b.    is the solute

c.    is dissolved in a solution

d.    dissolves non polar compounds

e.    can be dissolved by other substances

15.  Water is a universal solvent, because

a.    a triatomic molecule        

b.    has a covalent bonding

c.    can dissolve many substances  

d.    consists of non metal elements

e.    has a bond angle of  about 105º

16.  One of the following statements is wrong about electrolytes. This wrong statement is ….

a.    all ionic compounds are electrolytes

b.    the cations and anions will carry the current

c.    all non polar molecular compounds are electrolytes       

d.    some very polar molecular compounds may be electrolytes

e.    electrolytes are substances which will conduct electricity when dissolved/melted

17.  When you dissolve sodium chloride in water, the wrong effect of it is ….

a.    the water is dissociated totally       

b.    there are cations and anions in the water

c.    the ions come from the sodium chloride

d.    cations and anions go into solution

e.    the ions are freely moving

18.  The wrong answer about water is ….

a.    consists of molecules

b.    the molecules are electrically conducting            

c.    each molecule carries no net electric charge

d.    when the molecules move, it carry no overall electric charge

e.    pure water is a nonconductor of electricity

19.  Although water is itself nonconduc-ting, it has the ability to dissolve various substances, some of which go into solution as freely moving ions. The example of an ionic aqueous solution is ….

a.    BaCl₂(aq)             

b.    Br₂(aq)

c.    C₁₂H₂₂O₁₁(aq)     

d.    C₆H₁₂O₆(aq)

e.    CO(NH₂)₂(aq)

20.  An electrolyte is a substance that dissolves in water to give a conducting solution. A common example is sodium chloride, which is ordinary table salt. The correct answer about the formula and the chemical bonding are ….

a.    NaCl, ionic                       

b.    NaCl, covalent

c.    NaCl₂, ionic          

d.    NaCl₂, covalent

e.    Na₂Cl, ionic

21.  One of the following information is correct about weak electrolytes. This information is ….

a.    form few ions in solution    

b.    conduct electricity well

c.    the solute consists of ions

d.    the result of dissociation is simple molecules

e.    most of the solute exists in the ions form

22.  One of the following information is correct about strong electrolytes. This information is …

a.    conduct electricity well    

b.    the solute is partly ionized

c.    form few ions in solution  

d.    the solute is quite easy to dissolve

e.    the solute exists in the molecules form