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9 Cards in this Set
- Front
- Back
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HEAT |
HEAT IS A TYPE OF ENERGY CALLED THERMAL ENERGY. (IT'S SOMETIMES CALLED CALOR) |
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WHY DOES HEAT TRANSFER HAPPEN??? |
DURING HEAT TRANSFER, THERMAL ENERGY ALWAYS MOVES IN THE SAME DIRECTION. (FROM WARMER AREAS TO COOLER AREAS) |
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SPECIFIC HEAT CAPACITY |
THE AMOUNT OF ENERGY REQUIRED TO INCREASE THE TEMPERATURE OF 1 KG OF A MATERIAL BY 1°C. |
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FORMULA |
Q = m x c x dT ENERGY=MASS X SPECIFIC HEAT CAPACITY X TEMPERATURE CHANGE ( = KG x J/KG°C x °C) |
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EXAMPLE |
Using the specific heat capacity of water (4200 J/kg°C),how much energy is needed to increase the temperature of 600 g of water by80°C in a kettle? Energy= 0.6 x 4200 x 80 = 201 600 J |
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LATENT HEAT |
THE AMOUNT OF ENERGY THAT IS ABSORBED BY A SUBSTANCE TO CHANGE ITS STATE |
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2 TYPES OF LATENT HEAT |
LATENT HEAT OF FUSION (MELTING SUBSTANCE) LATENT HEAT OF VAPORIZATION (BOILING SUBSTANCE) |
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HEAT OF FUSION |
Q = m x L ENERGY = MASS x HEAT OF FUSION J = Kg x J/Kg |
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HEAT OF VAPORIZATION |
Q = m x U ENERGY = MASS x HEAT OF VAPORIZATION J = Kg x J/Kg |
