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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