# Round 2! Double Jeopardy Calorim- etry Energy Changes in Heat Vocab Thermo Fun 100 200 300 400 500 FJ.

## Presentation on theme: "Round 2! Double Jeopardy Calorim- etry Energy Changes in Heat Vocab Thermo Fun 100 200 300 400 500 FJ."— Presentation transcript:

Round 2! Double Jeopardy

Calorim- etry Energy Changes in Heat Vocab Thermo Fun 100 200 300 400 500 FJ

Calorimetry for 100 Question: What is the system in this example? Check Your Answer H2OH2O NaOH

Calorimetry for 100 Answer: NaOH Back to Game Board NaOH

Calorimetry for 200 Question: Heat lost by the system is equal to what? Check Your Answer

Calorimetry for 200 Answer: Heat gained by the surroundings Back to Game Board

Calorimetry for 300 Question: What is wrong with this calorimeter? Check Your Answer

Calorimetry for 300 Answer: no cover – losing heat to the environment! Back to Game Board

Calorimetry for 400 Question: What is/are the surrounding(s) in this example? Check Your Answer

Calorimetry for 400 Answer: Water (and everything else except the metal!) Back to Game Board

Calorimetry for 500 Question: What law explains the basis for calorimetry? Check Your Answer

Calorimetry for 500 Answer: Law of Conservation of Energy Back to Game Board

Energy for 100 Question: What type of energy is stored in the bonds of a substance? Check Your Answer

Energy for 100 Answer: Chemical potential energy Back to Game Board

Energy for 200 Question: Which has the most thermal energy? ( all contain H 2 O ) Check Your Answer

Energy for 200 Answer: B, most mass and highest temperature Back to Game Board

Energy for 300 Question: A 30.0 g piece of metal gives off 250. J as it cools down 35.0 o C. What is the specific heat of the metal? Check Your Answer

Energy for 300 Answer: 0.238 J/g o C Back to Game Board

Energy for 400 Question: What is the term for the measure of the average kinetic energy of a substance? Check Your Answer

Energy for 400 Answer: Temperature Kinetic energy = energy of motion Back to Game Board

Energy for 500 Question: Convert this energy to joules. Check Your Answer 440. Calories

Energy for 500 Answer: 1.84 x 10 6 J Back to Game Board

Changes in Heat for 100 Question: Is this process endothermic or exothermic: Water vapor in the air condenses on the outside of a glass of iced tea. Check Your Answer

Changes in Heat for 100 Answer: Exothermic Back to Game Board Heat is released Ice Lab!

Changes in Heat for 200 Question: What is the term for energy transferred between objects because of a difference in temperature? Check Your Answer

Changes in Heat for 200 Answer: Heat Back to Game Board

Changes in Heat for 300 Check Your Answer Question : Calculate the amount of heat required in kilojoules to boil 50.0g of water at its boiling point.

Changes in Heat for 300 Answer: 113 kJ Back to Game Board

Changes in Heat for 400 Question: A 20.0g sample of water at 250. K is mixed with 35.0g of water at 310. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings. Check Your Answer

Changes in Heat for 400 Answer: 288K Back to Game Board

Changes in Heat for 500 Question: How much heat does a metal lose when it is heated and then submerged in 150. g of cool water, and the temperature of the water increases by 3.80 o C assuming no heat loss to the surroundings? Check Your Answer

Changes in Heat for 500 Answer: 2380 J Back to Game Board

Vocab for 100 Question: What is the name for this piece of equipment? Check Your Answer

Vocab for 100 Answer: Calorimeter Back to Game Board

Vocab for 200 Question: What is the term for the amount of heat need to raise the temperature of an object by 1 o C? Check Your Answer

Vocab for 200 Answer: heat capacity Back to Game Board

Vocab for 300 Question: What is the term for the heat content of a system at constant pressure? Check Your Answer

Vocab for 300 Answer: Enthalpy ( H ) Back to Game Board

Vocab for 400 Question: What does ΔH f stand for? Check Your Answer

Vocab for 400 Answer: Standard heat of formation Back to Game Board

Vocab for 500 Question: What is the term that means the energy required to boil one mole of a substance at its boiling point? Check Your Answer

Vocab for 500 Answer: Molar heat of vaporization, ΔH vap Back to Game Board

Thermo Fun for 100 Question: What are standard conditions for a thermochemical equation? Check Your Answer

Thermo Fun for 100 Answer: 25 o C and standard pressure (1 atm) Back to Game Board

Thermo Fun for 200 Question: Write the complete thermochemical equation for the formation of carbon monoxide gas. Check Your Answer

Thermo Fun for 200 Answer: C(s) + ½ O 2 (g) CO(g) Δ H = -110.5 kJ/mol Back to Game Board

Thermo Fun for 300 Question: Find the ΔH for this reaction using Hesss Law: H 2 CO 3 (g) H 2 O (g) + CO 2 (g) Δ H =? H 2 CO (g) + O 2 (g) H 2 CO 3 (g) Δ H =-252.0 kJ H 2 O (g) + CO 2 (g) H 2 CO (g) + O 2 (g) Δ H =112.5 kJ Check Your Answer

Thermo Fun for 300 Answer: H 2 CO 3 (g) H 2 CO (g) + O 2 (g) Δ H =+252.0 kJ H 2 CO (g) + O 2 (g) H 2 O (g) + CO 2 (g) Δ H =-112.5 kJ H 2 CO 3 (g) H 2 O (g) + CO 2 (g) Δ H =139.5kJ Back to Game Board

Thermo Fun for 400 Question: How much heat is absorbed when 15.0 g of NH 4 NO 3 are dissolved in water? NH 4 NO 3 (s) NH 4 + (aq) + NO 3 - (aq) H soln = 25.7 kJ/mol Check Your Answer

Thermo Fun for 400 Answer: 4.82 kJ Back to Game Board

Thermo Fun for 500 Check Your Answer Question: It takes 153.9 J to raise the temperature of 25.75 g of iron from 25.0 o C to 38.3 o C. Calculate the molar heat capacity.

Thermo Fun for 500 Answer: 25.1 J/mol o C Back to Game Board

Final Category Heat in Changes of State

Final Question Question: How many kilojoules are required to heat 10.0 grams of water from 10.0 o C to 110. o C? Answer C ice = 2.03 J/g o C C steam = 2.02 J/g o C

Final Answer Answer: 26.6 kJ Back to Game Board start end A C B + +

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