Concept explainers
As stated in the text, there is no one scientific method. However, making observations, formulating hypotheses, and performing experiments are generally components of “doing science.” Read the following passage, and list any observations, hypotheses, and experiments. Support your answer.
Joyce and Frank arc eating raisins and drinking ginger ale. Frank accidentally drops a raisin into his ginger ale. They both notice that (lie raisin falls to the bottom of the glass. Soon, the raisin rises Lo the surface of the ginger ale, then sinks. Within a couple of minutes, it rises and sinks again. Joyce asks. “I won der why that happened?” Frank says. I don’t know, hut let’s see if it works in water.” Joyce fills a glass with water and drops the raisin into the glass. After a few minutes, Frank says, “No, it doesn’t go up and down in the water.” Joyce closely observes the raisins in the two glasses and states, “Look, there are hubbies on the raisins in the ginger ale but not on the raisins in the water.” Frank says, ‘it must be the bubbles that make the raisin rise.” Joyce asks, “OK, hut then why do they sink again?”
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Chapter 1 Solutions
Introductory Chemistry: A Foundation
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- What is meant by the statement Macroscopic observations have molecular causes? Give two examples.arrow_forwardInstructions: Write in the right column "F" if it is false and "V" if it is true, as appropriate in each sentence. 1. The initiation of chemistry can be considered from the time of prehistoric man, who used fire in metallurgy. 2. Chemistry is the science whose object of study is living beings and their origin, evolution and properties. 3. Aristoteles considered that everything was composed of four elements earth, air, fire and water, 4. Knowledge of chemistry is used to manufacture drugs. 5. The study of chemistry serves as a support for the other sciences, such as physics, biology, medicine, etc. 6. Chemistry is present in washing and bathing products and technology-related products such as batteries. 7. According to the scientific method, data collection consists of obtaining information derived from the implementation of the research design. 8. Lavoisier introduced the use of the balance 9. Heterogeneous mixtures are uniform throughout. 10. Wind energy is the main source…arrow_forwardHow is scientific writing different from the style of writing that you learned in ENG 111? (Select all that are correct.) Group of answer choices a. Scientific writing is concise, written in 3rd person, and uses past tense. b. Science writing uses lots of colorful language to describe visual reactions to the experiment. c. Science writing uses lots of personal pronouns (e.g., I, me, we, you, your, our) to show ownership of the results and personal attention to directions. d.Science writing assumes the reader already knows how to do the experiment that is the subject of your paper. e.Science writing may include references that are from peer reviewed sources.arrow_forward
- The scientific method is commonly broken down into four parts. In which part of the scientific method would the statement below fit best? "Bananas turn brown on exposure to air" Observation Theory Experiment Hypothesisarrow_forwardCopper is in the left beaker and zinc is in the right. Write a description of the macroscopic observations you may expect when testing this experimental design. We have a volt of +1.10. Will the light bulb glow? Example of Macroscopic observations are attached.arrow_forwardFor you what are some of the weirdest scientific experiments ever done? And what are some of the weirdest scientific experiments ever done?arrow_forward
- The nuclei of a limited number of atoms are investigated to determine the number of protons and neutrons in each. The following table summarizes the results: helium 2 protons, 2 neutrons carbon 6 protons, 6 neutrons nitrogen 7 protons, 7 neutrons a. Form a scientific law based on these limited measurements. b. What other measurements could be carried out to further confirm this law? c. Devise a theory that would explain your law. d. How would the following results affect your theory and your law? uranium 92 protons, 143 neutrons chromium 24 protons, 28 neutronsarrow_forwardStudents 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.arrow_forwardThe Chemistry in Focus segment titled Dr. Ruth—cotton Hero discusses the enormous contribution of Dr. Ruth Rogan Benerito to the survival of the cotton fabric industry in the United States. In the discussion, it was mentioned that Dr. Benerito became a chemist when women were not expected to be interested in, or good at, scientific subjects. Has this attitude changed? Among your own friends, approximately how many of your female friends are studying a science? How many plan to pursue a career in science? Discuss.arrow_forward
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