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The process whereby molecules are separated using
electrical charges is
called.
A.
Electrophoresis
B.
Calorimetry
C.
Spectrophotometry
D. Titration - ANSWER-
A
The slow addition of one solution of a known concentration to
a known volume
of another solution of unknown concentration until the
reaction reaches
neutralization is
called
,A.
Electrophoresis
B.
Calorimetry
C.
Spectrophotometry
D. Titration -
ANSWER-D
The science of measuring the amount of
heat is called
A.
Electrophoresis
B.
Calorimetry
C.
Spectrophotometry
D. Titration -
ANSWER-B
__________________ involves measuring the amount of visible
light absorbed
by a colored solution. It not only involves working with
visible light, but also
near-ultraviolet and near-
infrared light.
A.
Electrophoresis
,B.
Calorimetry
C.
Spectrophotometry
D. Titration -
ANSWER-C
The human eye perceives leaves on a tree as green because of
light that is
A.
Absorbed
B.
Refracted
C.
Reflected
D. Diffracted -
ANSWER-C
Which of the following kinds of waves require particles to
propagate?
A. Radio waves
B. Sound waves
C. Microwaves
D. X-rays - ANSWER-B
The primary chemical process in the sun that
creates light is A. the fission of helium into
hydrogen.
, B. the fission of lithium into helium and hydrogen.
C. the fusion of hydrogen into helium.
D. the fusion of helium into beryllium - ANSWER-C
The British Isles on the east side of the Atlantic Ocean are
often warmer than the coastal parts of Canada at the same
latitude. This is because ocean currents warm the
atmosphere of the British Isles. This kind of heat transfer is
called A. Radiation
B. Convection
C. Thermoregulation
D. Transduction - ANSWER-B
In an experiment, you want to measure the amount of mass a
piece of wood liberates when it burns. The most accurate way
of doing this would be to
A. Measure the volume and pressure of the gases emitted
by the burning wood, and then calculate the number of
molecules present.
B. Chill the gases emitted by the burning wood over liquid
nitrogen so the mass of the solid carbon dioxide (dry ice) can
be measured. C. Determine the mass of the ash after the wood
burns.
D. Measure the mass of the wood before and after it burns. -
ANSWER-D
If a refrigerator was running in an empty room with its door
open, the temperature of the room would eventually