PS Ch 8 Solutions 3/4 Question Preview (ID: 5381)


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Pennies minted after 1984 contain 97.5% zinc and 2.5% copper. These coins are examples of
a) suspensions
b) emulsions
c) alloys
d) colloids

Which of the following is a method for separating a solution of miscible liquids
a) distilling
b) decanting
c) alloying
d) filtering

The electrons in a water molecule are gathered nearest to
a) the one oxygen atom
b) the two hydrogen atoms
c) the four hydrogen atoms
d) none of the answers are correct

Particles in a(n) ______________ can be separaqted by filtration
a) alloy
b) solution
c) suspension
d) all of the answers are correct

A molecule that has partially charged positive and negative area is
a) universal
b) non polar
c) polar
d) decanted

Because many substances dissolve in water, water is called the
a) heterogeneous solvent
b) homogeneous solvent
c) universal solvent
d) universal solute

What type of bonding occurs between two water molecules
a) ionic bonding
b) hydrogen bonding
c) oxygen bonding
d) water bonding

Compounds that do not dissolve in water are usually
a) polar
b) dispersed
c) homogeneous
d) non polar

The ability of a substance to dissolve in another at a given temperature and pressure is
a) molarity
b) concentration
c) solubility
d) saturation

A solution that is able to dissolve additional solute is best described as
a) dilute
b) concentrated
c) saturated
d) unsaturated

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