Heat, temperature, Conduction

Heat, temperature, ConductionOct. 31-Nov. 5Key ConceptsAdding 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.

Room temperature washers in hot waterWhen 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

Hot washers in room temperature waterWhen 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

Spoon and conductionHeated Spoonhttp://www.middleschoolchemistry.com/multimedia/chapter2/lesson1#heated_spoonCooled Spoonhttp://www.middleschoolchemistry.com/multimedia/chapter2/lesson1#cooled_spoonConducting energy http://www.middleschoolchemistry.com/multimedia/chapter2/lesson1#conducting_energy