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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
colloids
B
alloys
C
emulsions
D
suspensions
2) Which of the following is a method for separating a solution of miscible liquids
A
distilling
B
filtering
C
alloying
D
decanting
3) The electrons in a water molecule are gathered nearest to
A
none of the answers are correct
B
the one oxygen atom
C
the two hydrogen atoms
D
the four hydrogen atoms
4) Particles in a(n) ______________ can be separaqted by filtration
A
suspension
B
solution
C
alloy
D
all of the answers are correct
5) A molecule that has partially charged positive and negative area is
A
polar
B
non polar
C
universal
D
decanted
6) Because many substances dissolve in water, water is called the
A
universal solute
B
universal solvent
C
homogeneous solvent
D
heterogeneous solvent
7) What type of bonding occurs between two water molecules
A
hydrogen bonding
B
water bonding
C
oxygen bonding
D
ionic 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
saturation
B
molarity
C
solubility
D
concentration
10) A solution that is able to dissolve additional solute is best described as
A
saturated
B
unsaturated
C
dilute
D
concentrated
*select an answer for all questions
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