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CHEM&110 Homework Chapter 1 1. In these diagrams, two different types of atoms are represented by color and size. Characterize each sample as an element, a compound, or a mixture. Explain your reasoning. (a) (b)

CHEM&110 Homework Chapter 1 1. In these diagrams, two different types of atoms are represented by color and size. Characterize each sample as an element, a compound, or a mixture. Explain your reasoning. (a) (b)

Chemistry
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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7. Consider the following blank periodic table. a. Locate the region of the periodic table in which metals are found. b. Common metals include iron, magnesium, aluminum, sodium, potassium, and silver. Give the chemical symbol for each. c. Give the name and chemical symbol for five nonmetals (elements that are not in your shaded region). 8. Classify each of these substances as an element, a compound, or a mixture. a. a sample of "laughing gas" (dinitrogen monoxide, also called nitrous oxide) b. steam coming from a pan of boiling water c. a bar of deodorant soap d. a sample of copper e. a cup of mayonnaise f. the helium filling a balloon 10. Provide the number of protons, neutrons, and electrons for an aluminum atom with a mass number of 27. How do these numbers change once an Al atom is oxidized to form an Al3+ ion? Provide the numbers of protons, neutrons, and electrons for a S2- ion with a mass number of 32. 11. Classify each of the following compounds as molecular or ionic. а. КBr b. РО, c. SO, d. SrCl, е. ХeF, 13. For the following molecules, list the number and type of atoms that each contain. а. СО, b. HS c. NO, d. Sio 14. The density of a mystery solid is 1.14 g/cm³. Will this float or sink in pure water? Explain. 23. Describe some components of your cell phone that are in units of cm, mm, µm, and nm
Transcribed Image Text:7. Consider the following blank periodic table. a. Locate the region of the periodic table in which metals are found. b. Common metals include iron, magnesium, aluminum, sodium, potassium, and silver. Give the chemical symbol for each. c. Give the name and chemical symbol for five nonmetals (elements that are not in your shaded region). 8. Classify each of these substances as an element, a compound, or a mixture. a. a sample of "laughing gas" (dinitrogen monoxide, also called nitrous oxide) b. steam coming from a pan of boiling water c. a bar of deodorant soap d. a sample of copper e. a cup of mayonnaise f. the helium filling a balloon 10. Provide the number of protons, neutrons, and electrons for an aluminum atom with a mass number of 27. How do these numbers change once an Al atom is oxidized to form an Al3+ ion? Provide the numbers of protons, neutrons, and electrons for a S2- ion with a mass number of 32. 11. Classify each of the following compounds as molecular or ionic. а. КBr b. РО, c. SO, d. SrCl, е. ХeF, 13. For the following molecules, list the number and type of atoms that each contain. а. СО, b. HS c. NO, d. Sio 14. The density of a mystery solid is 1.14 g/cm³. Will this float or sink in pure water? Explain. 23. Describe some components of your cell phone that are in units of cm, mm, µm, and nm
CHEM&110 Homework Chapter 1 1. In these diagrams, two different types of atoms are represented by color and size. Characterize each sample as an element, a compound, or a mixture. Explain your reasoning. (a) (b) (c) (d) 4. Express each of these numbers in scientific notation. a. 1500 m, the distance of a foot race b. 0.0000000000958 m, the distance between O and H atoms in a water molecule c. 0.0000075 m, the diameter of a red blood cell 5. Express 1 m in terms of cm, µm, and nm. Use proper scientific notation in your answers. 6. Consider this portion of the periodic table and the groups shaded on it. a. What is the group number for each shaded region? b. Name the elements that make up each group. c. Give a general characteristic of the elements in each of these groups.
Transcribed Image Text:CHEM&110 Homework Chapter 1 1. In these diagrams, two different types of atoms are represented by color and size. Characterize each sample as an element, a compound, or a mixture. Explain your reasoning. (a) (b) (c) (d) 4. Express each of these numbers in scientific notation. a. 1500 m, the distance of a foot race b. 0.0000000000958 m, the distance between O and H atoms in a water molecule c. 0.0000075 m, the diameter of a red blood cell 5. Express 1 m in terms of cm, µm, and nm. Use proper scientific notation in your answers. 6. Consider this portion of the periodic table and the groups shaded on it. a. What is the group number for each shaded region? b. Name the elements that make up each group. c. Give a general characteristic of the elements in each of these groups.
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