Thomas R. Gilbert, Rein V. Kirss, Natalie Foster
ISBN #9780393284218
2nd Edition
2,756 Questions
Homework Questions
Chemistry: An Atoms-Focused Approach is a comprehensive textbook that anchors the study of chemistry in its most fundamental concepts—atomic theory and the particulate nature of matter—to explore everything from chemical bonding and reaction energetics to diverse applications in environmental, industrial, and biological contexts. The book systematically unfolds the evolution of our chemical understanding, beginning with foundational experiments and the structure of atoms and progressing through topics such as intermolecular forces, stoichiometry, thermodynamics, and electrochemistry. It integrates both qualitative insights and quantitative problem-solving techniques, including density calculations, dimensional analysis, and titration methods, to build a cohesive framework for evaluating chemical phenomena. By linking historical breakthroughs with modern applications—such as clean energy, medical imaging, and materials science—the text equips students with the practical tools and conceptual clarity needed for advanced study and real-world chemical analysis.
Chapter 1
Matter and Energy: An Atomic Perspective
Chapter 2
Atoms, lons, and Molecules: The Building Blocks of Matter
Chapter 3
Atomic Structure: Explaining the Properties of Elements
Chapter 4
Chemical Bonding: Understanding Climate Change
Chapter 5
Bonding Theories: Explaining Molecular Geometry
Chapter 6
Intermolecular Forces: Attractions between Particles
Chapter 7
Stoichiometry: Mass Relationships and Chemical Reactions
Chapter 8
Aqueous Solutions: Chemistry of the Hydrosphere
Chapter 9
Thermochemistry: Energy Changes in Chemical Reactions
Chapter 10
Properties of Gases: The Air We Breathe
Chapter 11
Properties of Solutions: Their Concentrations and Colligative Properties
Chapter 12
Thermodynamics: Why Chemical Reactions Happen
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Chapter 13
Chemical Kinetics: Clearing the Air
Chapter 14
Chemical Equilibrium: Equal but Opposite Reaction Rates
Chapter 15
Acid-Base Equilibria: Proton Transfer in Biological Systems
Chapter 16
Additional Aqueous Equilibria: Chemistry and the Oceans
Chapter 17
Electrochemistry: The Quest for Clean Energy
Chapter 18
The Solid State: A Particulate View
Chapter 19
Organic Chemistry: Fuels, Pharmaceuticals, and Modern Materials
Chapter 20
Biochemistry: The Compounds of Life
Chapter 21
Nuclear Chemistry: The Risks and Benefits
Chapter 22
The Main Group Elements: Life and the Periodic Table
Chapter 23
Transition Metals: Biological and Medical Applications
Problem 1
Figure $\mathrm{P} 11.2$ provides a particle-level view of a sealed container partially filled with a solution of two miscible liquids: X (blue spheres) and Y (red spheres). Which of the following statements about substances $\mathrm{X}$ and $\mathrm{Y}$ are true? a. $Y$ is the solvent in this solution. b. Pure $Y$ has a higher vapor pressure than pure $X$. c. The presence of $Y$ in the solution lowers the vapor pressure of X. d. If $Y$ were not present, there would be fewer total particles in the gas above the liquid solution. (IMAGE CANNOT COPY)
Anatole Borisov Numerade Educator
Problem 2
Which of the highlighted elements in Figure P3.1 has the greatest number of unpaired electrons per ground-state atom?
Lottie Adams Numerade Educator
Problem 3
Which of the following statements best describes the change depicted in Figure P1.4? a. A mixture of two gaseous elements is cooled to a temperature at which one of them condenses. b. A mixture of two gaseous compounds is heated to a temperature at which one of them decomposes. c. A mixture of two gaseous elements undergoes deposition. d. A mixture of two gaseous elements reacts to form two compounds, one of which is a liquid. (FIGURE CAN'T COPY)
Himanshu Garg Numerade Educator
Problem 4
Each of the pairs of images in Figure P7.3 contains substances composed of two elements: X (red spheres) and Y (blue spheres). Write a balanced chemical equation for the reaction taking place in each pair of images. Be sure to indicate the physical states of the reactants and products using the appropriate symbols in parentheses. (Check your book to see figure)
Susan Hallstrom Numerade Educator
Problem 5
Figure P8.1 shows a solution containing three binary (HX) acids. One of them is a weak acid and the other two are strong acids. Which color sphere is formed by ionization of the weak acid? (FIGURE CAN'T COPY)
Heather Doyle Numerade Educator
Problem 6
The progress with time of a reaction system is depicted in Figure $\mathrm{P} 14.2 .$ Red spheres represent the molar concentration of substance A and blue spheres represent the molar concentration of substance B. a. Does the system reach equilibrium? b. In which direction $(A \rightarrow B \text { or } B \rightarrow A$ ) is equilibrium attained? (FIGURE CAN'T COPY)
Jorge Villanueva Numerade Educator
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