Students are given samples of unknown chemical compounds. The samples could be ionic, molecular, acidic, or basic. The students must design two experiments to unambiguously differentiate between these categories of matter. Experiments Experiment 1 To differentiate between ionic and molecular compounds. Experiment 2 To differentiate between acidic and basic compounds. The students have access to the three experimental tests below to use for their experiments.

Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter18: Acids And Bases
Section: Chapter Questions
Problem 110A
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Students are given samples of unknown chemical compounds. The samples could be
ionic, molecular, acidic, or basic. The students must design two experiments to
unambiguously differentiate between these categories of matter.
Experiments
Experiment
1
To differentiate between ionic and molecular compounds.
Experiment
2
To differentiate between acidic and basic compounds.
The students have access to the three experimental tests below to use for their
experiments.
Experimental Design Considerations
Experimental Test
Possible Expected Results
1 Solubility (in
water)
4 Dissolves forming an aqueous solution
5 Does not dissolve and stays solid in
water
6 Solution conducts electricity
7 Solution does not conduct electricity
8 Red litmus stays red and blue litmus
stays blue
2 Conductivity (of
solution)
3 Litmus paper (of 9 Red litmus turns blue and blue litmus
solution)
stays blue
O Řed litmus stays red and blue litmus
turns red
Numeric Response
8. Using the numbers above, determine the best experimental test and identify the
expected experimental result for each of the two experiments described below.
Number:
Experimental
Test
Expected
Result for lonic
Experimental
Test
Expected
Result for
Acidic
Experiment 1
To differentiate between lonic To differentiate between Acidic
and Molecular Compounds
Descriptions:
Experiment 2
and Basic Compounds
Transcribed Image Text:Students are given samples of unknown chemical compounds. The samples could be ionic, molecular, acidic, or basic. The students must design two experiments to unambiguously differentiate between these categories of matter. Experiments Experiment 1 To differentiate between ionic and molecular compounds. Experiment 2 To differentiate between acidic and basic compounds. The students have access to the three experimental tests below to use for their experiments. Experimental Design Considerations Experimental Test Possible Expected Results 1 Solubility (in water) 4 Dissolves forming an aqueous solution 5 Does not dissolve and stays solid in water 6 Solution conducts electricity 7 Solution does not conduct electricity 8 Red litmus stays red and blue litmus stays blue 2 Conductivity (of solution) 3 Litmus paper (of 9 Red litmus turns blue and blue litmus solution) stays blue O Řed litmus stays red and blue litmus turns red Numeric Response 8. Using the numbers above, determine the best experimental test and identify the expected experimental result for each of the two experiments described below. Number: Experimental Test Expected Result for lonic Experimental Test Expected Result for Acidic Experiment 1 To differentiate between lonic To differentiate between Acidic and Molecular Compounds Descriptions: Experiment 2 and Basic Compounds
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