Introductory Chemistry: A Foundation
8th Edition
ISBN: 9781285199030
Author: Steven S. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Textbook Question
Chapter 1, Problem 17QAP
Students approaching the study of chemistry must learn certain basic facts (such as the names and symbols of the most common elements), but it is much more important that they learn to think critically and to go beyond the specific examples discussed in class or in the textbook. Explain how learning to do this might be helpful in any career, even one far removed from chemistry.
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Based on the quote below,
"We may lay it down as an incontestable axiom that, in all the operations of art and nature, nothing is created; an equal amount of matter exists both before and after the experiment. Upon this principle, the whole art of performing chemical experiments depends." --Antoine Lavoisier, 1789
Explain what the quote implies and relate it to the "Law of Conservation of Mass".
There are four sketches below. The first sketch shows a sample of Substance X. The three sketches underneath it show three
different changes to the sample. You must decide whether each of these changes is possible. If a change is possible, you must
also decide whether it is a physical change or a chemical change.
Each sketch is drawn as if the sample were under a microscope so powerful that individual atoms could be seen. Also, you should
assume that you can see the entire sample, and that the sample is in a sealed box, so that no matter can enter or leave.
Change 1
Change 1 is:
00
impossible
a physical change
a chemical change
Sample of Substance X
000
Change 2
Change 2 is:
impossible
a physical change
a chemical change
Change 3
Change 3 is:
00
impossible
a physical change
a chemical change
There are four sketches below. The first sketch shows a sample of Substance X. The three sketches underneath it show three different changes to the sample.
You must decide whether each of these changes is possible. If a change is possible, you must also decide whether it is a physical change or a chemical change.
Each sketch is drawn as if the sample were under a microscope so powerful that individual atoms could be seen. Also, you should assume that you can see the
entire sample, and that the sample is in a sealed box, so that no matter can enter or leave.
Sample of Substance X
Change 1
Change 1 is
O impossible
O
O a chemical change
a physical change
Change 2
Change 2 is:
impossible
O a physical change
O a chemical change
Change 3
000 000
Change 3 is:
O impossible
O a physical change
O a chemical change
X
Chapter 1 Solutions
Introductory Chemistry: A Foundation
Ch. 1.4 - What if everyone in the government used the...Ch. 1 - Discuss how a hypothesis can become a theory. Can...Ch. 1 - Make five qualitative and five quantitative...Ch. 1 - Prob. 3ALQCh. 1 - Differentiate between a “theory” and a “scientific...Ch. 1 - Describe three situations when you used the...Ch. 1 - Scientific models do not describe reality. They...Ch. 1 - Theories should inspire questions. Discuss a...Ch. 1 - Describe how you would set up an experiment to...Ch. 1 - Prob. 9ALQ
Ch. 1 - As stated in the text, there is no one scientific...Ch. 1 - Prob. 11ALQCh. 1 - As part of a science project, you study traffic...Ch. 1 - Prob. 13ALQCh. 1 - Chemistry is an intimidating academic subject for...Ch. 1 - The first paragraphs in this chapter ask you if...Ch. 1 - This section presents several ways our day-to-day...Ch. 1 - The Chemistry in Focus segment titled Dr....Ch. 1 - This textbook provides a specific definition of...Ch. 1 - We use chemical reactions in our everyday lives,...Ch. 1 - Prob. 7QAPCh. 1 - Being a scientist is very much like being a...Ch. 1 - In science, what is the difference between a law...Ch. 1 - Observations may be either qualitative or...Ch. 1 - Prob. 11QAPCh. 1 - True or false? If a theory is disproven, then all...Ch. 1 - Although, in general, science has advanced our...Ch. 1 - Discuss several political, social, or personal...Ch. 1 - Although reviewing your lecture notes and reading...Ch. 1 - Why is the ability to solve problems important in...Ch. 1 - Students approaching the study of chemistry must...Ch. 1 - The ‘Chemistry in Focus” segmentChemistry: An...
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