Chemistry Chapter One Problems

Chemistry Chapter One Problems - Blaine Rogalski CHEM 1017...

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Blaine Rogalski CHEM 1017 10/13/10 Chemistry Chapter One 7. The ability of a substance to undergo a chemical reaction and to form new substances is called a chemical property. For example, rusting is a chemical property of iron. Chemical properties are observed only when a substance undergoes a chemical change. A chemical change always results in a change in chemical composition of the substances involved, such as burning, rotting, rusting, decomposing, fermenting, exploding, and corroding. A physical property is a quality or condition of a substance that can be observed or measured without changing the substance’s composition. Some examples of physical properties are color, solubility, odor, hardness, density, melting point, and boiling point. Such a change, which alters a given material without changing its composition, is called a physical change. Examples of physical changes include cutting, grinding, bending, change in temperature, dissolving, condensing, splitting, and freezing. The formation of a gas or a solid from a liquid or the productions of a color change are common indications that a chemical change may be taking place. Energy is always absorbed or given off in a chemical reaction, but it is not proof. Energy is also
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Chemistry Chapter One Problems - Blaine Rogalski CHEM 1017...

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