Courses
Chemistry is the study of how a set of substances with particular physical propertiesÑlike solid paper and the oxygen in the airÑcan react with each other to form different substances with entirely different propertiesÑlike gaseous water and carbon dioxide. In most cases, these chemical changes result in an energy change...
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Chemistry is the study of how a set of substances with particular physical propertiesÑlike solid paper and the oxygen in the airÑcan react with each other to form different substances with entirely different propertiesÑlike gaseous water and carbon dioxide. In most cases, these chemical changes result in an energy change...
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Middle School Civics delivers instruction, practice, and review designed to build middle school students’ understanding of the political and governmental systems of the United States and the roles played by citizens. By honing their ability to analyze civic life, political practices, and government structures, students build the depth of knowledge...
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A citizen is a person who is legally recognized by a state and entitled to the stateÕs rights and privileges. Civics is the study of the rights and duties of such a person. One of the best ways to understand your rights and duties as a citizen is to study...
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