Per8_over - Preview of Period 8: Chemical Energy 8.1 Atoms,...

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Unformatted text preview: Preview of Period 8: Chemical Energy 8.1 Atoms, Elements, and Compounds What are the chemical components of matter? 8.2 The Electromagnetic Force What holds atoms and molecules together? 8.3 Chemical Reactions and Equations How do you write a balanced chemical equation? 8.4 Energy and Chemical Reactions How much energy is released in chemical reactions? 8.5-6 Endothermic and Exothermic Reactions What are examples of endothermic and exothermic chemical reactions? 8-1 Forms of Energy Mechanical Energy of Motion: The energy exhibited by objects in motion. Thermal Energy: The unorganized energy of motion of vibrating atoms and molecules. Sound Energy: The organized energy of motion of vibrating atoms and molecules. Electrical Energy: The energy resulting from forces between charged particles. Magnetic Energy: The energy resulting from the forces between magnets. Radiant Energy: The energy resulting from vibrations of charges, such as radio waves, microwaves, or visible light. Gravitational Potential Energy: The energy stored in raised objects, which could fall. Strain Potential Energy: The energy stored in a stretched or compressed spring. Chemical Energy: The energy available in the chemical bonds binding atoms together . Electrical Potential Energy: The energy stored by static electric charges. Nuclear Energy: Energy available in the nuclei of radioactive atoms. 8-1a The Composition of Matter Atoms consist of a positively charged nucleus surrounded by negatively charged electrons. The nucleus consists of nucleons positively charged protons and electrically neutral neutrons. What Holds Nucleons together in a Nucleus? Strong nuclear force holds nucleons (protons and neutrons) together in atomic nuclei. It is the strongest force, but it acts over only very short distances (10 15 m). At even shorter distances, the strong force is repulsive, which keeps the separation between adjacent nucleons nearly the same....
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Per8_over - Preview of Period 8: Chemical Energy 8.1 Atoms,...

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