Read the descriptions below of two substances and an experiment on each. Decide whether the result of the experiment tells you the substance is a pure substance or a mixture, if you can • Sample A is a solid yellow cube with a total mass of 50.0 g. The cube is ground to a fine orange powder and added to a 500 ml beaker full of water. The beaker is stirred vigorously. Some of orange powder settles to the bottom of the beaker, and some rises to the top and floats on the water. When the powder at both the bottom and the top of the beaker is filtered out, dried, and weighed, the total mass is measured to be 50.1 g. • Sample B is 100 ml. of a clear liquid. The density of the liquid is measured, and turns out to be 0.77 g/ml.. The liquid is then cooled in the refrigerator. At 10.0 °C two separate clear layers form in the liquid. When the temperature is raised back to room temperature, the layers disappear. Is sample A made from a pure substance or a mixture? If the description of the substance and the outcome of the experiment isn't enough to decide, choose "can't decide. Is sample B made from a pure substance or a mixture? If the description of the substance and the outcome of the experiment isn't enough to decide, choose "can't decide." O pure substance O mixture O (can't decide) O pure substance O mixture O (can't decide)
Read the descriptions below of two substances and an experiment on each. Decide whether the result of the experiment tells you the substance is a pure substance or a mixture, if you can • Sample A is a solid yellow cube with a total mass of 50.0 g. The cube is ground to a fine orange powder and added to a 500 ml beaker full of water. The beaker is stirred vigorously. Some of orange powder settles to the bottom of the beaker, and some rises to the top and floats on the water. When the powder at both the bottom and the top of the beaker is filtered out, dried, and weighed, the total mass is measured to be 50.1 g. • Sample B is 100 ml. of a clear liquid. The density of the liquid is measured, and turns out to be 0.77 g/ml.. The liquid is then cooled in the refrigerator. At 10.0 °C two separate clear layers form in the liquid. When the temperature is raised back to room temperature, the layers disappear. Is sample A made from a pure substance or a mixture? If the description of the substance and the outcome of the experiment isn't enough to decide, choose "can't decide. Is sample B made from a pure substance or a mixture? If the description of the substance and the outcome of the experiment isn't enough to decide, choose "can't decide." O pure substance O mixture O (can't decide) O pure substance O mixture O (can't decide)
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:Read the descriptions below of two substances and an experiment on each. Decide whether the result of the experiment tells you the substance is a pure
substance or a mixture, if you can
• Sample A is a solid yellow cube with a total mass of 50.0 g. The cube is ground to a fine orange powder and added to a 500 ml beaker full of water. The
beaker is stirred vigorously. Some of orange powder settles to the bottom of the beaker, and some rises to the top and floats on the water. When the
powder at both the bottom and the top of the beaker is filtered out, dried, and weighed, the total mass is measured to be 50.1 g.
• Sample B is 100 ml. of a clear liquid. The density of the liquid is measured, and turns out to be 0.77 g/ml.. The liquid is then cooled in the refrigerator.
At 10.0 °C two separate clear layers form in the liquid. When the temperature is raised back to room temperature, the layers disappear.
Is sample A made from a pure substance or a mixture?
If the description of the substance and the outcome of
the experiment isn't enough to decide, choose "can't
decide.
Is sample B made from a pure substance or a mixture?
If the description of the substance and the outcome of
the experiment isn't enough to decide, choose "can't
decide."
O pure substance
O mixture
O (can't decide)
O pure substance
O mixture
O (can't decide)
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