Monday, May 24, 2010

Science...please put letter my number the letters are messed up...it's A, C, B,D?

1.Which of the following does NOT describe ionic compounds?


a.high melting point


b.brittle


c.do not conduct electric currents in water


d.dissolve easily in water





2.An increase in the amount of hydrogen ions in a solution ____ the pH.


a.raises


c.does not affect


b.lowers


d.doubles





3.Of the following, in equal concentrations, a ____ has the lowest pH.


a.salt


c.strong acid


b.strong base


d.None of the above





4.Which of the following is an inorganic compound?


a.methane (CH4)


c.methylamine (CH3NH2)


b.water (H2O)


d.acetic acid (CH3COOH)





5.What type of compound can be formed by the reaction of a metal with a nonmetal?


a.nonmetallic compound


c.metalloidal compound


b.metallic compound


d.ionic compound





6.A compound that shatters when hit with a hammer is most likely a(n)


a.ionic compound.


c.metallic compound.


b.covalent compound.


d.metalloidal compound.





7.Magnesium oxide melts at 2,800°C. What type of compound is magnesium oxide?


a.ionic compound


c.metallic compound


b.covalent compound

Science...please put letter my number the letters are messed up...it's A, C, B,D?
1.b brittle


2.b lowers


3.c strong acid


4.b water


5.d ionic compound


6.b covalent compound


7.a ionic compound


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