1. Chemistry Jeopardy Chapter 2 Review 2-1 Forms of Energy 2-1 Energy Measures 2-2 Temp 2- 4 Mix it up D.A. 200 400 600 800 1000

2. Chapter 2-1 200 200 The capacity to do work requires? –energy

3. Chapter 2-1 400 400 Energy from the sun is called? –Radiant energy

4. Chapter 2-1 600 600 Energy possessed by objects because of their position is called? –Potential energy

5. Chapter 2-1 800 800 Energy of motion is called? –Kinetic Energy

6. Chapter 2-1 1000 1000 Temperature is a measure of? –Kinetic Energy

7. Chapter 2-1 200 200 What is the SI unit scale used to measure temperature? –Kelvin (K)

8. Chapter 2-1 400 400 What does absolute zero mean as far as particle movement? –Movement has ceased (stopped)

9. Chapter 2-1 600 600 What is absolute zero in Kelvin and Celsius? –0 K –-273 o C

10. Chapter 2-1 800 800 The calorie is defined as –The amount of heat needed to raise the temperature of 1g of water by 1 o C

11. Chapter 2-1 1000 1000 State the Law of Conservation of Matter. How does this law apply to energy? What is the exception to the rule? –Matter is neither created nor destroyed –Energy is neither created or destroyed, it is simply converted to another form of energy –In nuclear reactions matter is lost. This concept is called Mass Defect.

12. Chapter 2-2 200 200 What is the formula for converting o C to Kelvin? –K = o C + 273

13. Chapter 2-2 400 400 What is the formula for converting K to o C ? – o C = K - 273

14. Chapter 2-2 600 600 Convert -73 o C to Kelvin –K = -73 + 273 = 200K

15. Chapter 2-2 800 800 Convert 56K to o C? – o C = 56 – 273 = -217 o C

16. Chapter 2-2 1000 1000 At what temperature does water boil at in o C and K? –100 o C –373 K

17. Chapter 2-4 200 200 Elements are defined as? Give an example. –A pure substance –Any symbol on the Periodic Table

18. Chapter 2-4 400 400 Compounds are described as? Give an example –Pure substance. –H 2 O – all the molecules in the container must be exactly the same

19. Chapter 2-4 600 600 What is the definition of a mixture? –Blend of two or more pure substances

20. Chapter 2-4 800 800 Compare and contrast homogenous and heterogeneous mixtures –Compare –Both are a blend of two or more pure substances –Contrasts –Homo – can not see the different substances –Hetero – can see the different substances

21. Chapter 2-4 1000 1000 Name the substance type. (Element, Compound, Homo or Hetero mixtures) H 2 O, chocolate chip cookies, salt water, salt & pepper, air, oxygen, granite –Compound, heterogeneous mixture, homogeneous mixture, heterogeneous mixture, homogeneous mixture, element, heterogeneous mixture,

22. DA 200 200 Convert 5.438 J to calories? –5.438J x (1cal) = 1.300 cal (4.184 J)

23. DA 400 400 Convert 5, 200 cal to Cal –5,200 cal x (1 Cal) = 5.2 Cal (1000 cal)

24. DA 600 600 Convert 460 Cal to J? –460 Cal x (1000 cal) x (4.184 J) =1,900,000 J or 1.9 x 10 6 J (1 Cal) x (1 cal)

25. DA 800 800 Convert 2.45 J to Cal –2.45 J x ( 1 cal) x (1 Cal) = 5.86 x 10 -4 Cal (4.184J) x (1000 cal)

26. DA 1000 1000 Ms B burns 3.5 Cal per minute during her morning walk. Ms. B walks for 1 and 22 minutes, how many Calories did she burn? How many slices of bread would Ms B have to eat to supply that amount of energy (1slice =460, 240 J) –82 min x (3.5 Cal) = 290 Cal ( 1 min) – 290 Cal x (1000 cal) x (4.184 J) x (1 slice) =0.63 slice ( 1 Cal) x ( 1 cal) x (460,240 J)

27. Final Jeopardy Why is Kelvin the SI unit for Temperature? –Temperature is a measure of Kinetic Energy. 0 K represents zero particle movement.