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Zumdahl, Chemistry 10th Edition
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Zumdahl, Chemistry 10th Edition
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Zumdahl, Chemistry 10th Edition
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Zumdahl, Chemistry 10th Edition
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Instructor Resource Manual for Chemistry 10th Edition by Steven S. Zumdahl, Susan A. Zumdahl , Donald J. DeCoste
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TEST BANK For Zumdahl, Chemistry 10th Editiont/f The steps of the scientific method must be followed in order every time an
experiment is carried out - ANSWER: False
t/f An object has the same weight regardless of its location on Earth - ANSWER: False
t/f Chemistry is the study of matter and the changes it goes through - ANSWER: True
t/f If an accidental discovery is made, it means something went wrong with the
experiment and the results should be discarded - ANSWER: False
t/f While preparing an acid solution, always add water to the acid - ANSWER: False
t/f In determining the percent error, only the size of the difference matters, not
whether the measured value is above or below the accepted value - ANSWER: True
t/f The SI unit for volume, liter, is equivalent to a meter cubed - ANSWER: False
Which is the part of an experiment that serves as the point of comparison for the
results - ANSWER: control
which precaution should you take when you see this symbol (it's a picture of goggles)
- ANSWER: wear goggles if you are performing or observing the experiment
Which precaution should you take when you see this safety symbol? (hands) -
ANSWER: Wash your hands after the lab
These three solid blocks are made of the same material and have the exact same
dimensions. Which block has the greatest mass? - ANSWER: They all have the same
mass.
Which describes what happens when you fly 10km above Earth's surface - ANSWER:
mass remains constant, weight decreases
A student conducts an experiment to determine the effect of adding salt on the
boiling temperature of water.
Which is the independent variable in this experiment? - ANSWER: Amount of salt
added
A student conducts an experiment to determine the effect of adding salt on the
boiling temperature of water.
Which is the dependent variable in this experiment? - ANSWER: Boiling temperature
, A student conducts an experiment to determine the effect of adding salt on the
boiling temperature of water.
What is a value that should remain constant for all samples in this experiment? -
ANSWER: Volume of water
A student conducts an experiment to determine the effect of adding salt on the
boiling temperature of water.
What is the control of this experiment? - ANSWER: Sample One
A student conducts an experiment to determine the effect of adding salt on the
boiling temperature of water.
What is a reasonable hypothesis for this experiment? - ANSWER: If salt is added to
water, then the water will boil at a higher temperature
A student conducts an experiment to determine the effect of adding salt on the
boiling temperature of water.
Which kind of graph would be best to use with this data? - ANSWER: Line graph
Which is NOT an appropriate unit for density? - ANSWER: g/cm
Which term describes the amount of mass contained per unit volume? - ANSWER:
density
Which value only has four significant digits? - ANSWER: 6.390
Which is the correct conversion for a temperature of 67.3 degrees celsius? -
ANSWER: 153.1 degrees fahrenheit
Which is the sum of these values, to the appropriate number of significant digits?
17.358+3.502+20.14 - ANSWER: 41.00
Expressed to the correct number of significant digits, the sum of two masses is 445.2
grams. Which two masses produced the answer? - ANSWER: 210.1g + 235.1g
A student told the class that she takes 500mg of vitamin C everyday. What is the
mass expressed in grams? - ANSWER: .5 grams
During a laboratory activity, a student combined two solutions. In the laboratory
report, the student wrote "A yellow color appeared." The statement represents the
student's recorded... - ANSWER: Observation
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