Investigating Energy Transfer in Water Mixing

Investigating Energy Transfer in Water Mixing
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This investigation focuses on the energy transfer that occurs when hot and cold water are mixed together. Students will observe and analyze what happens to the temperature and kinetic energy of the water particles during this process

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About Investigating Energy Transfer in Water Mixing

PowerPoint presentation about 'Investigating Energy Transfer in Water Mixing'. This presentation describes the topic on This investigation focuses on the energy transfer that occurs when hot and cold water are mixed together. Students will observe and analyze what happens to the temperature and kinetic energy of the water particles during this process. The key topics included in this slideshow are . Download this presentation absolutely free.

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Slide1Investigation 5 - Energy Transfer8th Grade Chemical Interactions

Slide2Water Mixing Review What happened to the cold water when it was mixed with the hot water?  What happened to the hot water when it was mixed with the cold water?

Slide3Water Mixing Review What happened to the kinetic energy of the particles in the hot water when the hot and cold water mixed?  What happened to the kinetic energy of the particles in the cold water when the hot and cold water mixed?

Slide4Water Mixing Review The  hot  water particles had  high  kinetic energy.  The  cold  water particles had  low  kinetic energy.  We mixed hot and cold water to make warm water.

Slide5Water Mixing Review The average kinetic energy of the warm water particles was  medium .  The kinetic energy of the hot water particles and cold water particles  changed  when they were mixed.

Slide6Water Mixing Review Equation for finding the average kinetic energy level: T f  =  T h  + T c       2

Slide7Temperature Change Heat moved from hot water to cold water.  The kinetic energy changed.  The two waters blended:  Hot   +  Cold =  Medium .

Slide8Temperature Change Heat moved from hot water to cold water.  The kinetic energy changed.  The two waters blended:  Hot   +  Cold =  Medium .

Slide9Energy Transfer The movement from one place to another is called energy transfer .  Sometimes matter gets hot as a result of energy transfer.  Sometimes matter gets colder as a result of energy transfer.

Slide10Energy TransferChange of temperature is evidence of energy transfer.

Slide11Energy Transfer Important Idea #1 :  The particles that make up matter are in constant motion. As a result, particles have high kinetic energy.  The level of kinetic energy of the particles in a sample of matter determines how hot it is.  Kinetic energy = Heat  The  greater  the kinetic energy of the particles in a sample of matter, the  hotter  it is.

Slide12Energy Transfer Important Idea #2 :  Energy transfers as a result of particle collisions.  When fast-moving particles collides with a slow-moving article, the one that was going fast slows down, and the one that was going slow speeds up.

Slide13Energy Transfer Important Idea #2 Continued :  Energy transfers between particles when they collide.

Slide14Energy Transfer Important Idea #2 Continued :  Energy transfer that results from collisions is called conduction .

Slide15Energy Transfer Important Idea #3 :  Energy always moves from higher energy (hot) to lower energy (cold). ALWAYS.

Slide16Energy Transfer Summary :  Kinetic Energy = Heat  Energy transfers between particles when they collide.  Energy always transfers from hot to cold.

Slide17Energy Transfer Practice Foss Web Multimedia:  Energy Transfer by Collision  Mixing Hot and Cold Water  http://www.fossweb.com/

Slide18Celsius Thermometer A thermometer is a tool measures temperature.  Temperature is the  average kinetic energy  of the particles of a substance.  Temperature is measured in degrees.  Celsius is one way to measure the average kinetic energy of the particles in a substance.

Slide19Celsius Thermometer mailto:http://www.fossweb.com/modulesMS/kit_mult imedia/login.php%3Frequest=/modulesMS/kit_multi media/ChemicalInteractions/