About the Book Updated! Before: Key Math Skills introduced in the previous edition are now connected with a dynamic study module that teaches students to write numbers in scientific notation and discusses dimensional analysis. Topics introduced in Key Math Skills include behavior of atoms in the formation of ionic and molecular compounds, stoichiometry, gas laws, calculating solutions or dilutions, PV=NRT-type problems, pH concentration and calculations, and equilibrium and K. During: Learning Catalytics questions have been increased to include 10 per chapter. After: Questions relate more closely to real life, engaging students deeper into the subject matter. Interactive Videos now correspond to a key concept/topic in most chapters, giving students an opportunity to reinforce what they just learned through visual learning. NEW AND UPDATED! Chapter Openers provide timely examples and engaging, topical issues of chemistry that is part of contemporary professions. Follow-Up Stories provide follow-up to the discussion in the chapter opener and include application questions. This narrative helps students stay engaged in the content and, utilizing the new chemistry content, connects the key concepts and problem solving to an overarching theme. Engage feature asks students to think about the paragraph they are reading and to test their understanding by answering the Engage question in the margin, which is related to the topic. “Try It First” feature precedes the Solution section of each Sample Problem, encouraging students to work on the problem before reading the given Solution and helping them learn to recall new ideas. Connect feature added to Analyze the Problem boxes indicates the relationships between Given and Need. A new topic with questions and problems on Hess's Law was added to Chapter 9. This package includes MasteringChemistry, an online homework, tutorial, and assessment program designed to work with this text to personalize learning and improve results. With a wide range of interactive, engaging, and assignable activities, students are encouraged to actively learn and retain tough course concepts. Chemistry Primer is a series of tutorials focused on remediating students taking their first college chemistry course. Topics include math in the context of chemistry, chemical skills and literacy, as well as some basics of balancing chemical equations, mole theory, and stoichiometry – all of which were chosen based on extensive surveys of chemistry professors across the country. The main body of each item in the primer offers diagnostic questions designed to help students recognize that they need help. If they struggle, the primer offers extensive formative help in the hint structure via wrong answer feedback, instructional videos, and step-wise worked examples that provide scaffolding to build up students’ understanding as needed. The primer is offered as a pre-built assignment that is automatically generated with every general chemistry and intro/prep chemistry course. Learning CatalyticsTM generates class discussion, guides your lecture, and promotes peer-to-peer learning with real-time analytics. MasteringChemistry with eText now provides Learning Catalytics–an interactive student response tool that uses students’ smartphones, tablets, or laptops to engage them in more sophisticated tasks and thinking. Instructors can: Pose a variety of open-ended questions that help your students develop critical thinking skills Monitor responses to find out where students are struggling Use real-time