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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
colloids
C
suspensions
D
emulsions
2) Which of the following is a method for separating a solution of miscible liquids
A
filtering
B
distilling
C
alloying
D
decanting
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
all of the answers are correct
B
suspension
C
solution
D
alloy
5) A molecule that has partially charged positive and negative area is
A
universal
B
polar
C
non polar
D
decanted
6) Because many substances dissolve in water, water is called the
A
heterogeneous solvent
B
homogeneous solvent
C
universal solute
D
universal solvent
7) What type of bonding occurs between two water molecules
A
water bonding
B
oxygen bonding
C
ionic bonding
D
hydrogen bonding
8) Compounds that do not dissolve in water are usually
A
non polar
B
homogeneous
C
dispersed
D
polar
9) The ability of a substance to dissolve in another at a given temperature and pressure is
A
saturation
B
concentration
C
solubility
D
molarity
10) A solution that is able to dissolve additional solute is best described as
A
unsaturated
B
dilute
C
concentrated
D
saturated
*select an answer for all questions
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