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Unformatted text preview: t one another and
the solid does not have the ability to flow. (Although the particles of a solid do not move position to position, they do have motion in that they are constantly vibrating.
To change the temperature of a solid, heat energy must be added. The amount of heat energy that changes
the temperature of 1.0 g of a solid by 1.0°C is called its specific heat (c). Each substance has its own
specific heat. The specific heat of ice is 2.1 Joules/g°C. In other words we must supply 1.0 gram of ice
with 2.1 Joules of heat energy to raise its temperature by 1.0 °C.
The general equation for calculating heat energy to change the temperature of a solid is:
Heat = Mass x Specific Heat (solid) x Temperature Change
Q = m c DT
H2O(s) at -20°C 10 g B-C
H2O(s) at 0 °C 10 g C-D
H2O(l) at 0°C 10 g D-E
H2O(l) at 100°C E-F
H2O(g) at 100°C 10 g H2O(g) at 140°C 10 g 10 g Calculate the heat necessary to change 10 g of ice(s) at -20 °C to 10 g of ice(s) at 0°C. (A-B) Q = mc∆T = (10 g) (2.1 J/g...
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This document was uploaded on 01/20/2014.
- Winter '14