By William L. Masterton

Realize the entire primary subject matters of basic chemistry with this short, reader-oriented publication. Masterton/Hurley/Neth's CHEMISTRY: rules AND REACTIONS, 7e, offers a transparent, concise presentation in response to the authors' greater than 50 years of mixed instructing adventure. The ebook contains new concept-driven examples, up-to-date examples that concentrate on molecular reasoning and knowing, and "Chemistry: past the study room" essays that exhibit the relevance of the options and spotlight one of the most up to date makes use of of chemistry. a robust, greater paintings application is helping readers visualize chemical recommendations. built-in end-of-chapter questions and Key options correlate to OWL on-line studying, the number one on-line homework and instructional approach for chemistry. additionally to be had are move Chemistry mini-video lectures and studying instruments on hand for video iPods, own video gamers, and iTunes.

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Winters • chemical properties, observed when the substance takes part in a chemical reaction, Properties of gold. The color of gold is an intensive property. The quantity of gold in a sample is an extensive property. The fact that gold can be stored in the air without undergoing any chemical reaction with oxygen in the air is a chemical property. The temperature at which gold melts (1063°C) is a physical property. a change that converts it to a new substance. For example, the fact that mercury(II) oxide decomposes to mercury and oxygen on heating to 600°C can be used to identify it.

Write the name of the element represented by the following symbols. (a) Hg (b) Si (c) Na (d) I 10. Write the name of the element represented by the following symbols. (a) Cr (b) Ca (c) Fe (d) Zn QUESTIONS AND PROBLEMS 23 12/28/10 11:05 AM Measurements 11. What instrument would you use to determine (a) the mass of a head of lettuce? (b) whether your refrigerator is cooling water to 10°C? (c) the volume of a glass of orange juice? 12. What instrument would you use to measure (a) whether you need to turn on the air conditioner?

Physical properties, observed without changing the chemical identity of a substance. Two such properties particularly useful for identifying a substance are –melting point, the temperature at which a substance changes from the solid to the liquid state. –boiling point, the temperature at which bubbles filled with vapor form within a liquid. If a substance melts at 0°C and boils at 100°C, we are inclined to suspect that it might just be water. In the remainder of this section we will consider a few other physical properties that can be measured without changing the identity of a substance.

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