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Heat, temperature, Conduction

This concise overview explores the fundamental principles of heat transfer and conduction. It explains how adding energy increases the motion of atoms and molecules, raising temperature, while removing energy causes a decrease in motion and temperature. The process of conduction, where faster-moving molecules transfer energy to slower-moving ones, is highlighted, along with the concept of heat transfer from substances of higher temperature to lower temperature. Practical examples, including the behavior of room-temperature and hot washers in water, illustrate these concepts effectively.

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Heat, temperature, Conduction

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  1. Heat, temperature, Conduction Oct. 31-Nov. 5

  2. Key Concepts • Adding energy (heating) atoms and molecules increases their motion, resulting in an increase in temperature. • Removing energy (cooling) atoms and molecules decreases their motion, resulting in a decrease in temperature. • Energy can be added or removed from a substance through a process called conduction. • In conduction, faster-moving molecules contact slower-moving molecules and transfer energy to them. • During conduction the slower-moving molecules speed up and the faster-moving molecules slow down. • Heat is the transfer of energy from a substance at a higher temperature to a substance at a lower temperature. • Some materials are better conductors of heat than others.

  3. Room temperature washers in hot water • When room-temperature washers are placed in hot water, the temperature of the washers increases and the temperature of the water decreases. • Energy from the water is transferred to the washers. • http://www.middleschoolchemistry.com/multimedia/chapter2/lesson1#heating_washers

  4. Hot washers in room temperature water • When hot washers are placed in room-temperature water, the temperature of the washers decreases and the temperature of the water increases. • Energy from the washers is transferred to the water. • http://www.middleschoolchemistry.com/multimedia/chapter2/lesson1#heating_washers

  5. Spoon and conduction • Heated Spoon • http://www.middleschoolchemistry.com/multimedia/chapter2/lesson1#heated_spoon • Cooled Spoon • http://www.middleschoolchemistry.com/multimedia/chapter2/lesson1#cooled_spoon

  6. Conducting energy • http://www.middleschoolchemistry.com/multimedia/chapter2/lesson1#conducting_energy

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