Your lab partner is flustered. In front of him are two beakers filled with colorless, odorless liquid. They have no labels, except one has a blue piece of tape on it and the other has a pink piece of tape. Your lab partners tells you, "One of these is a solution of pure potassium nitrate in water, and the other one is a colloid of starch in water. But I have no idea which is which. I used up all my reagents, and I have to get to the next step in my reaction. Can you help me figure out which is which?" Being a wise chemist, you immediately figure out an easy way to solve your lab partner's dilemma. You pull out your laser pointer from your pocket and aim the beam through both beakers in order. When you aim at the bottle with the pink label, you see the laser beam going through the liquid very clearly. When you point the laser through the beaker with the blue label, you don't see any laser beam inside the liquid. You see a bright spot on the wall though. Immediately, you announce to your lab partner the following answer: > View Available Hint(s) O I don't know. O The blue labeled bottle contains the starch colloid. O The pink labeled bottle contains the starch colloid. O The pink labeled bottle contains the potassium nitrate.
Your lab partner is flustered. In front of him are two beakers filled with colorless, odorless liquid. They have no labels, except one has a blue piece of tape on it and the other has a pink piece of tape. Your lab partners tells you, "One of these is a solution of pure potassium nitrate in water, and the other one is a colloid of starch in water. But I have no idea which is which. I used up all my reagents, and I have to get to the next step in my reaction. Can you help me figure out which is which?" Being a wise chemist, you immediately figure out an easy way to solve your lab partner's dilemma. You pull out your laser pointer from your pocket and aim the beam through both beakers in order. When you aim at the bottle with the pink label, you see the laser beam going through the liquid very clearly. When you point the laser through the beaker with the blue label, you don't see any laser beam inside the liquid. You see a bright spot on the wall though. Immediately, you announce to your lab partner the following answer: > View Available Hint(s) O I don't know. O The blue labeled bottle contains the starch colloid. O The pink labeled bottle contains the starch colloid. O The pink labeled bottle contains the potassium nitrate.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:Your lab partner is flustered. In front of him are two beakers filled with colorless, odorless liquid. They have no labels, except one
has a blue piece of tape on it and the other has a pink piece of tape. Your lab partners tells you, "One of these is a solution of pure
potassium nitrate in water, and the other one is a colloid of starch in water. But I have no idea which is which. I used up all my
reagents, and I have to get to the next step in my reaction. Can you help me figure out which is which?"
Being a wise chemist, you immediately figure out an easy way to solve your lab partner's dilemma. You pull out your laser pointer
from your pocket and aim the beam through both beakers in order. When you aim at the bottle with the pink label, you see the laser
beam going through the liquid very clearly. When you point the laser through the beaker with the blue låbel, you don't see any laser
beam inside the liquid. You see a bright spot on the wall though.
Immediately, you announce to your lab partner the following answer:
• View Available Hint(s)
I don't know.
O The blue labeled bottle contains the starch colloid.
O The pink labeled bottle contains the starch colloid.
The pink labeled bottle contains the potassium nitrate.
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