Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter3: Matter
Section: Chapter Questions
Problem 45AP: (For Exercises 4546) Solutions containing nickel(II) ion are usually bright green in color. When...
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Question
A student added 5 grams of calcium chloride, a white solid substance, to 15 grams of water at 220 C. Several observations were made and the student inferred that a
Which observation best supports the student's inference that a chemical reaction occurred?
-
A.
The calcium chloride dissolved in the solution.
-
B.
The mass of the solution totals 20 grams.
-
C.
The temperature of the solution is 350 C.
-
D.
The solution became lighter in color.
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