By Martin Silberberg
For 5 variants, the Silberberg model has been famous within the normal chemistry industry as an exceptional vintage. The 6th variation has been replaced in lots of how you can hold velocity with the evolution of pupil studying. The textual content nonetheless comprises remarkable macroscopic-to-microscopic molecular illustrations, constant step by step labored routines in each bankruptcy, and an intensive variety of end-of-chapter difficulties, which supply attractive functions masking a large choice of pursuits, together with engineering, drugs, fabrics, and environmental stories. adjustments were made to the textual content and functions all through to cause them to extra succinct, to the paintings to make it extra teachable and sleek, and to the layout to make it extra simplistic and open.
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Extra info for Chemistry - The Molecular Nature of Matter and Change
Supporters proposed that phlogiston had negative mass! These responses seem ridiculous now, but they point out that the pursuit of science, like any other endeavor, is subject to human failings; even today, it is easier to dismiss conflicting evidence than to give up an established idea. Into this chaos of “explanations” entered the young French chemist Antoine Lavoisier (1743–1794), who demonstrated the true nature of combustion. In a series of careful measurements, Lavoisier heated mercury calx, decomposing it into mercury and a gas, whose combined masses equaled the starting mass of calx.
Matter exists in three physical states—solid, liquid, and gas. The observable features that distinguish these states reflect the arrangement of a substance’s particles. • A change in physical state brought about by heating may be reversed by cooling. A chemical change can be reversed only by other chemical changes. Macroscopic changes result from submicroscopic changes. • Changes in matter are accompanied by changes in energy. • An object’s potential energy is due to its position; an object’s kinetic energy is due to its motion.
The plan will • Clarify the known and unknown. ) • Suggest the steps from known to unknown. ) • Present a “roadmap” of the solution for many problems in early chapters (and some in later ones). The roadmap is a visual summary of the planned steps. Each step is shown by an arrow labeled with information about the conversion factor or operation needed. 3. Solution. In this part, the steps appear in the same order as in the plan. 4. Check. In most cases, a quick check is provided to see if the results make sense: Are the units correct?
Chemistry - The Molecular Nature of Matter and Change by Martin Silberberg