What will happen during melting point determination if air is trapped in the sample? Mark all that apply. Start of the melt may be hard to determine with a loosely packed sample It takes longer for the sample to melt and may exhibit a mistakenly broad range of melting It takes longer for the sample to melt and may exhibit a mistakenly sharp range of melting The air is not a good conductor of heat, so the heat will not be evenly distributed

What will happen during melting point determination if air is trapped in the sample? Mark all that apply. Start of the melt may be hard to determine with a loosely packed sample It takes longer for the sample to melt and may exhibit a mistakenly broad range of melting It takes longer for the sample to melt and may exhibit a mistakenly sharp range of melting The air is not a good conductor of heat, so the heat will not be evenly distributed

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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Concept explainers

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.

Question

If one wishes to repeat the experiment, it must be done with a fresh sample. Why?
Mark all that apply.
When melted, compounds form different compounds
When cooled, compounds can change to their mirror image
Compounds may decompose during melting
When cooled, may form a different crystal structure

What will happen during melting point determination if air is trapped in the sample?
Mark all that apply.
Start of the melt may be hard to determine with a loosely packed sample
It takes longer for the sample to melt and may exhibit a mistakenly broad range
of melting
It takes longer for the sample to melt and may exhibit a mistakenly sharp range
of melting
The air is not a good conductor of heat, so the heat will not be evenly
distributed
h

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