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CH 2 SEC 3ENERGY AND MATTER
ENERGY- IS THE ABILITY TO DO WORK OR CAUSE CHANGE.
KEY- EVERY CHEMICAL OR PHYSICAL CHANGE IN MATTER INCLUDES A CHANGE IN ENERGY.
KEY- LIKE MATTER ENERGY IS NEITHER CREATED OR DESTROYED IN CHEMICAL REACTIONS, BUT CAN CHANGE FROM ONE FORM TO ANOTHER!
ENERGY
EXAMPLE- WHEN CHARCOAL BURNS IT RELEASES ENERGY IN THE FORM OF HEAT AND LIGHT.
KEY- FORMS OF ENERGY RELATED TO CHANGES IN MATTER INCLUDE; THERMAL ENERGY, CHEMICAL ENERGY, ELECTROMAGNETIC ENERGY, AND ELECTRICAL ENERGY.
ENERGY AND MATTER
FORMS OF ENERGY
TEMPERATURE- IS A MEASURE OF THE AVERAGE ENERGY OF RANDOM MOTION OF PARTICLES OF MATTER
THERMAL ENERGY- IS THE TOTAL ENERGY OF ALL THE PARTICLES IN AN OBJECT. EX- HOT CUP OF COFFEE RELEASING T. E.
THERMAL ENERGY- ALWAYS FLOWS FROM WARMER MATTER TO COOLER MATTER
TEMP AND THERMAL ENERGY
EARTHS TEMPERATURE
COPY TO NOTES
ENDOTHERMIC CHANGE- IS CHANGE WHEN ENERGY IS TAKEN IN.
EX- ICE MELTING , THE ICE TAKES IN THE ENERGY FROM IT SURROUNDINGS
FORMS OF ENERGY
TIP OF THE ICEBERGENDOTHERMIC
EXOTHERMIC CHANGE- ENERGY IS GIVEN OFF.
EX-WHEN CHARCOAL BURNS IT RELEASES ENERGY IN THE FORM OF LIGHT AND HEAT
CHANGES IN ENERGY
EXOTHERMIC
KEY- DURING A CHEMICAL CHANGE, CHEMICAL ENERGY MAY BE CHANGED TO OTHER FORMS OF ENERGY.
EX- WHEN YOU PUSH A BIKE AND YOURSELF UP A HILL, CHEMICAL ENERGY FROM FOODS YOU ATE IS TRANSFORMED INTO ENERGY OF MOTION.
TRANSFORMING ENERGY
KEY- ONE OF THE MOST IMPORTANT ENERGY TRANSFORMATIONS ON EARTH THAT INVOLVES CHEMICAL ENERGY IS PHOTOSYNTHESIS.
KEY- DURING PHOTOSYNTHESIS, PLANTS TRANSFORM ELECTROMAGNETIC ENERGY FROM THE SUN INTO CHEMICAL ENERGY AS THEY MAKE MOLECULES OF SUGAR.
KEY- WHEN WE EAT PLANTS AND ANIMALS WE TRANSFORM THE ENERGY ONCE AGAIN TO ENABLES US TO LIVE.
PHOTOSYNTHESIS SKETCH
https://www.brainpop.com/science/energy/formsofenergy/
BRAINPOP
1-AB 2-ABC
Q &A P.77