Notes on Specific Heat
Website Address: https://library.curriki.org/oer/Notes-on-Specific-Heat
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(del) Open Source CA Textbook - Chemistry
- CA Chemistry Standards Correlation
- Introduction and Chemistry Course Overview
- Unit 1: Atomic and Molecular Structure
- Unit 2: Chemical Bonding
- Unit 3: Conservation of Matter & Stoichiometry
- Unit 4: Gases and Their Properties
- Unit 5: Acids and Bases
- Unit 6: Solutions
- Unit 7: Chemical Thermodynamics
- Unit 8: Reaction Rates
- Unit 9: Chemical Equilibrium
- Unit 10: Organic and Biochemistry
- Unit 11: Nuclear Chemistry
- APPENDIX 1: Investigations and Lab Safety
- APPENDIX 2: Measurement
- APPENDIX 3: Review of Chemistry Basics
- OLD Unit 4: Gases and Their Properties
- OLD Unit 5: Acids and Bases
- OLD Unit 6: Solutions
- OLD Unit 7: Reaction Rates and Equilibrium
- OLD Unit 7: Energy and Thermodynamics
- OLD Unit 9: Organic Chemistry and Biochemistry
OLD Unit 4: Gases and Their Properties
Introduction and Chemistry Course Overview
Unit 7: Chemical Thermodynamics
OLD Unit 7: Energy and Thermodynamics
- Slideshow - Thermochemistry
- Lab - Nut Calorie Measurement
- Problems - Calorimetry
- Notes - Energy
- Lab - Endothermic and Exothermic reactions
- Worksheet - Endothermic, Exothermic, Stoichiometry
- Lab - Hot washers and cold water
- Lab - Hand Warmers
- Energy Review
- Energy Review 2
- Slideshow - Energy Transfer
- Heat Transfer Problems
- Lab - Specific Heat Capacity
- Chart - Specific Heat of water and metals
- UNIT 6 PRINTABLES
- Notes on Specific Heat
- UNIT 6 SUPPLEMENTARY
- Unit 6 PRINTABLES
- Unit 6 SUPPLEMENTARY
MEASURING ENERGY CHANGES
Calorimeter—a device used to measure energy given off or absorbed during chemical changes.
Reinforce the LAW OF CONSERVATION OF ENERGY
EXAMPLE AND DRAWING OF AN EXO REACTION
Will temperature of the water go up or down?
EXAMPLE AND DRAWING OF AN ENDO REACTION
Will temperature of the water go up or down?
SPECIFIC HEAT
SPECIFIC HEAT (Cp)—the heat required to raise the temperature of one gram of substance by one Celcius degree. Every substance has its own specific heat. (specific value)
1 g Water = 4.148 J/gCº
1 g Al = .902 J/gCº
A-3 A-5 HAVE ALL THE SPECIFIC HEATS
Heat required to raise the temp. of one gram of water, one Celcius degree is 4.184 Joules. The specific heat of water is 4.148 J/gCº
HOW CAN ONE MEASURE HEAT LOST OR HEAT GAINED
q = (m) * (?T) * (Cp)
|
SYMBOL |
DESCRIPTION |
UNIT |
|
Q |
heat
gained or lost by the water |
(J) |
|
M |
mass
in grams |
(g
) |
|
DT |
change
in temperature (Ti– Tf) Ti
= temperature initial Tf
= temperature final |
(ºC) |
|
Cp |
specific heat |
(J / g * Cº) |
How much heat is lost when a solid aluminum ingot with a mass of 4000 g cools from 500ºC to 100ºC?
CAl = .903 J / g * Cº
q = (4000 g) * (500-100ºC) * (.903 J / g * Cº)
