THE ANSWER OF ELECTROLYTES AND NON-ELECTROLYTES QUIZ Part I

QUIZ FOR YOU

1.    Data of electrolytes test :

Solution	Bulb	Other observation
A	Doesn’t light	No bubles
B	Doesn’t light	A little bubles
C	Light brightly	A lot of bubles
D	Light	A lot of bubles
E	Light	A little bubles

The solution that classified as weak electrolyte(s) is (are) ....

a.    A dan B           

b.    B dan E                

c.    C dan D           

d.    D dan E

e.    B, D, dan E

2.    When an ionic compound dissolve into pure water, the effect which can be observed by using an apparatus for testing electrolytes is ….

a.    the bulb lights                   

b.    the solute ionizes partly

c.    pure water electrically conducting

d.    there are freely moving molecules

e.    all molecules conduct an electric current

3.    Chemists began studying the electrical behaviour of substances in the early nineteenth century, and they knew that you could make pure water electrically conducting by ….

a.    dissolving certain substances   

b.    evaporating the pure water

c.    making aqueous solution

d.    separating the elements

e.    using battery

4.    Svante Arrhenius proposed the ionic theory of solutions. According to this theory, if we dissolve certain substances into pure water, the wrong effect is ….

a.    pure water electrically conducting      

b.    there are freely moving ions

c.    all ions conduct an electric current

d.    an aqueous solution is formed

e.    there is a process of ionization  

5.    Freely moving ions will be found in each solution below, except ….

a.    NaCl(aq)        

b.    C₆H₁₂O₆(aq)        

c.    H₂S(aq)          

d.    CH₃COOH(aq)

e.    KI(aq)

6.    The water molecule is a polar molecule, because the oxygen atom has a greater electronegativity than the hydrogen atoms. The wrong statement about water is ….

a.    as a polar solvent

b.    an ionic compound          

c.    a universal solvent

d.    has a covalent bonding

e.    consists of non metal elements

7. 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

8.    As an excellent solvent, the polarity of the water molecule causes it to bond to many solvents and dissolve them, particularly ….

a.    ionic compounds

b.    polar compounds

c.    non polar compounds

d.    ionic and polar compounds          

e.    polar and non polar compounds

9.    An ionic compound can be dissolved into water, because ….

a.    it contains ions

b.    it can be ionized

c.    it is easy to dissolve

d.    it consists more than one atom

e.    it has a different bond with water

10.  The following substances which can be dissolved into water are ….

a.    salts and metals

b.    metals and non metals

c.    acids, bases, and salts

d.    non metals and salts

e.    metals, non metals, salts