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Gradebook MasteringChemistry is the only system to capture the step-by-step work of each student in class, including wrong answers submitted, hints requested, and time taken on every step. This data powers an unprecedented gradebook. Student Performance Snapshot This screen provides your favorite weekly diagnostics. With a single click, charts summarize the most difficult problems, vulnerable students, grade distribution, and even score improvement over the course. xlii EXTEND LEARNING BEYOND THE CLASSROOM Pearson eText The eText gives students access to the text whenever and wherever they can access the Internet.

A gas can be compressed to occupy a smaller volume, or it can expand to occupy a larger one. A liquid has a distinct volume independent of its container but has no specific shape. It assumes the shape of the portion of the container it occupies. A solid has both a definite shape and a definite volume. Neither liquids nor solids can be compressed to any appreciable extent. 4). In a gas the molecules are far apart and moving at high speeds, colliding repeatedly with one another and with the walls of the container.

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