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PS Ch 8 Solutions 3/4
Test Description: .
Instructions: Answer all questions to get your test result.
1) Pennies minted after 1984 contain 97.5% zinc and 2.5% copper. These coins are examples of
A
alloys
B
suspensions
C
emulsions
D
colloids
2) Which of the following is a method for separating a solution of miscible liquids
A
filtering
B
decanting
C
distilling
D
alloying
3) The electrons in a water molecule are gathered nearest to
A
the one oxygen atom
B
the two hydrogen atoms
C
none of the answers are correct
D
the four hydrogen atoms
4) Particles in a(n) ______________ can be separaqted by filtration
A
alloy
B
all of the answers are correct
C
suspension
D
solution
5) A molecule that has partially charged positive and negative area is
A
non polar
B
universal
C
decanted
D
polar
6) Because many substances dissolve in water, water is called the
A
universal solute
B
heterogeneous solvent
C
universal solvent
D
homogeneous solvent
7) What type of bonding occurs between two water molecules
A
ionic bonding
B
hydrogen bonding
C
oxygen bonding
D
water bonding
8) Compounds that do not dissolve in water are usually
A
non polar
B
dispersed
C
homogeneous
D
polar
9) The ability of a substance to dissolve in another at a given temperature and pressure is
A
molarity
B
concentration
C
solubility
D
saturation
10) A solution that is able to dissolve additional solute is best described as
A
saturated
B
dilute
C
unsaturated
D
concentrated
*select an answer for all questions
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