1. Matter and Energy Jeopardy
Types of Matter
Properties and Changes
Kinetic Energy
Potential Energy
Fun With Calorimetry
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©Norman Herr, 2000

3. A-100 ANSWER: I can be decomposed only by chemical change. What am I?
QUESTION: Compound

4. A-200 ANSWER: I can be decomposed by physical change. What am I?
QUESTION: Mixture

5. A-300
ANSWER: I cannot be decomposed by physical or chemical change. What am I?
QUESTION: An element

6. A-400
ANSWER: How would you classify a solution of sodium chloride in water (NaCl (aq)) ?
QUESTION: Homogeneous Mixture

7. A-500
ANSWER: I am a solution of iodine mixed with alcohol. I am not an aqueous solution, what am I?
QUESTION: Tincture

8. B-100
ANSWER: List three physical properties
QUESTION:

9. B-200
ANSWER: List three physical changes
QUESTION:

10. B-300
ANSWER: List three chemical changes
QUESTION:

11. B-400
ANSWER: List three chemical properties.
QUESTION:

12. B-500 ANSWER: Is this a physical or chemical property or change:
Gold is a soft metal that can be drawn out into extremely thin wires than are excellent conductors of electricity.
QUESTION: Physical properties

13. C-100
ANSWER: What measuring tool can be used to measure the average kinetic energy of a substance?
QUESTION: Thermometer

14. C-200 ANSWER: Convert 10oC to K, show your work.
QUESTION: 10oC = 283 K

15. C-300 ANSWER: Convert 50 K to Celsius, showing your work.
QUESTION: 50 K = -223 oC

16. C-400 ANSWER: Which substance has higher average kinetic energy:
10.0 g of water at 50oC or
40.0 g of water at 310 K?
QUESTION: 50oC is the higher temperature.

17. C-500
ANSWER: Your house is at a toasty 27oC and you open the front door. Outside the temperature is 277 K. Will heat flow into or out of the house? Explain.
QUESTION:

18. D-100
ANSWER: Define potential energy.
QUESTION: Stored energy

19. D-200 ANSWER: Where is chemical energy stored?
QUESTION: Chemical bonds

20. D-300
ANSWER: Dissolving sodium hydroxide in water makes the temperature increase. What kind of change is this (and I don’t mean physical or chemical)?
QUESTION: Exothermic

21. D-400
ANSWER: Burning a macadamia nut in a bomb calorimeter filled with water causes the temperature of the water to increase. Is PE being lost or gained, and what is doing the losing or gaining of the PE?
QUESTION: The macadamia nut is losing PE.

22. D-500
ANSWER: Placing an ice cube in water in a calorimeter makes the temperature decrease. Explain the changes in PE and KE that are taking place. Who is losing what? Who is gaining what?
QUESTION: The ice is gaining PE as the water loses KE.

23. E-100
ANSWER: How many joules are needed to heat g of water in a calorimeter by 10oC? Show your work.
QUESTION: q =mcDT = g X 4.2j/g.oC X 10oC = 4200 J

24. E-200
ANSWER: The addition of J to a sample of water changed the temperature from 20.0oC to 30.0oC. What is the mass of the water? Show you work.
QUESTION: m = q/cDT = J / (4.2 J/g-oC X 10.0oC) = 23.8 g

25. E-300
ANSWER: If J of energy are added to 20.0 grams of water, how much would the temperature change by?
QUESTION: q=mcDT, so DT = q/mc, = J / (4.2 J/g-oC X 20.0 g) = 12oC

26. E-400
ANSWER: If J are added to g of water at 25.0oC, what will the final temperature be?
QUESTION: q=mcDT, so DT = q/mc, = J / (100.0 g X 4.2 J/g-oC) =1.2oC. Since we added this to 25.0, the final temperature is 26.2oC.

27. E-500
ANSWER: If J are removed from g of water at 25.0oC, what will the final temperature be?
QUESTION: q=mcDT, so DT = q/mc, = J / (100.0 g X 4.2 J/g-oC) =1.2oC. Since we removed this from 25.0, the final temperature is 23.8oC.