27
Energy Chapter 10 JEOPARDY
| Date post: | 28-Dec-2015 |
| Category: |
Documents |
| Upload: | clara-hoover |
| View: | 225 times |
| Download: | 1 times |
EnergyChapter 10
JEOPARDY
CalorimetryCalorimetry VocabVocab EnergyEnergySpecific Heat Specific Heat
CapacityCapacityHess’s LawHess’s Law
100 100 100 100 100
200 200 200 200 200
300 300 300 300 300
400 400 400 400 400
500 500 500 500 500
Calorimetry100
An insulated device used to determine the heat associated with a chemical reaction
A: What is a Calorimeter?
S2C06 Jeopardy Review
Calorimetry 200
A: What is an endothermic process?
The process described here
S2C06 Jeopardy Review
Reactants + energy Reactants + energy Products Products
Calorimetry 300
A: What is a calorie (or 4.184J) ?
The quantity of energy required to heat one gram of water by one Celsius degree
S2C06 Jeopardy Review
Calorimetry 400
A: What are 251 J ?
The joule equivalent to 60.1 calories
S2C06 Jeopardy Review
Calorimetry500
A: What is 49oC ?(4.18)(125)(68-x) = (2.22)(138)(x-17) x = 49ºC
The thermal equilibrium temperature if 125 g of water at 68oC is mixed with 138 g of gasoline at 17oC ?
cwater = 4.18J/gC; cgas = 2.22J/gC
S2C06 Jeopardy Review
Vocabulary100
A: What is the First Law of Thermodynamics?
S2C06 Jeopardy Review
A law stating that the energy of the universe is constant
Vocabulary 200
A: What is heat?
Energy transferred between two objects due to a temperature difference between them
S2C06 Jeopardy Review
Vocabulary 300
A: What is potential energy?
Energy due to position or composition
S2C06 Jeopardy Review
Vocabulary 400
A: What is internal energy ?
The sum of the kinetic and potential energies of all components of an object (ΔE = q + w)
S2C06 Jeopardy Review
Vocabulary 500
A: What is a state function?
A property of the system that changes independent of pathway
S2C06 Jeopardy Review
Energy100
A: What is petroleum?
S2C06 Jeopardy Review
A thick, dark liquid composed mostly of hydro-carbon compounds
Energy200
A: What is the Greenhouse Effect?
A warming effect exerted by certain molecules in the earth’s atmosphere (particularly carbon dioxide and water)
S2C06 Jeopardy Review
Energy300
A: What is coal?
Formed from the remains of plants that were buried and subjected to high pressure and heat over long periods of time
S2C06 Jeopardy Review
Energy400
A: What is 13.4 calories?
Calories of energy that correspond to 56.2 joules
S2C06 Jeopardy Review
Energy500
A: What is wind energy ?
A form of renewable energy that has been used for several millennia and is currently being harvested across farmlands
S2C06 Jeopardy Review
Specific Heat Capacity100
A: What is specific heat capacity?
S2C06 Jeopardy Review
The amount of heat required to raise the temperature of one gram of substance by one degree Celsius.
Specific Heat Capacity200
A: What is 526 J?
S2C06 Jeopardy Review
The amount of heat energy (in joules) needed to raise the temperature of 7.40 g of water from 29.0°C to 46.0°C
J 526 C17.07.40gC g
J 4.18
Specific Heat Capacity 300
A: What are J/goC ?
The units for specific heat capacity?
S2C06 Jeopardy Review
Specific Heat Capacity400
S2C06 Jeopardy Review
A: What are 1.77 X 105 J ?
The joules of energy required to heat 454g of water from 5.40°C to 98.6°C ?
4.18 J x 454 g x 93.2°C = 1.77 X 105 J g °C
Specific Heat Capacity500
S2C06 Jeopardy Review
A: What are 314,000 J (or 314 kJ) ?
The amount of energy as heat that is required to raise the temperature of 1.00 L of water from 25.0 C to boiling
4.18 J x 1000 g x 75.0°C = 313,500 J g °C
Hess’s Law100
A: What is enthalpy (ΔH)?
The change in heat that flows during a reaction at constant pressure
S2C06 Jeopardy Review
Hess’s Law200
A: What is +68 kJ ?S2C06 Jeopardy Review
Calculate H for the following reaction: N2 + 2O2 2NO2
Given: Reaction Ho
N2 + O2 2NO 180 kJ
2NO + O2 2NO2 -112 kJ
Hess’s Law300
A: What is - 2486 ?S2C06 Jeopardy Review
Calculate H for the following reaction: C2 H4 + 6F2 2CF4 + 4HF
Given: Reaction Ho
H2 + F2 2HF -537 kJ
2C + 2H2 C2 H4 52 kJ
CF4 C + 2 F2 680 kJ
Hess’s Law400
A: What is – 792 kJ ? S2C06 Jeopardy Review
Calculate H for the following reaction: 2S + 3O2 2SO3
Given: Reaction Ho
S + O2 SO2 -297 kJ
2SO3 2 SO2 +O2 198 kJ
Hess’s Law 500
S2C06 Jeopardy Review
A: What is - 890.36 ?
Calculate H for the combustion of methane, CH4: CH4 + 2O2 CO2 + 2H2O
Given: Reaction Ho
C + 2H2 CH4 -74.80 kJ
C + O2 CO2 -393.50 kJ
H2 + ½ O2 H2O -285.83 kJ
