Chemistry JeopardyChapter 2 Review

2-1Forms ofEnergy

2-1Energy

Measures

2-2 Temp

2- 4Mix it up

D.A.

200 200 200 200 200

400 400 400 400 400

600 600 600 600 600

800 800 800 800 800

1000 1000 1000 1000 1000

Chapter 2-1200

• The capacity to do work requires?– energy

Chapter 2-1400

• Energy from the sun is called?– Radiant energy

Chapter 2-1600

• Energy possessed by objects because of their position is called?– Potential energy

Chapter 2-1800

• Energy of motion is called?– Kinetic Energy

Chapter 2-11000

• Temperature is a measure of?– Kinetic Energy

Chapter 2-1200

• What is the SI unit scale used to measure temperature?– Kelvin (K)

Chapter 2-1400

• What does absolute zero mean as far as particle movement?– Movement has ceased (stopped)

Chapter 2-1600

• What is absolute zero in Kelvin and Celsius?– 0 K– -273o C

Chapter 2-1800

• The calorie is defined as– The amount of heat needed to raise

the temperature of 1g of water by 1o C

Chapter 2-11000

• 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.

Chapter 2-2200

• What is the formula for converting oC to Kelvin?– K = oC + 273

Chapter 2-2400

• What is the formula for converting K to oC ?– oC = K - 273

Chapter 2-2600

• Convert -73 oC to Kelvin– K = -73 + 273 = 200K

Chapter 2-2800

• Convert 56K to oC?– oC = 56 – 273 = -217 oC

Chapter 2-21000

• At what temperature does water boil at in oC and K?– 100 oC– 373 K

Chapter 2-4200

• Elements are defined as? Give an example.– A pure substance– Any symbol on the Periodic Table

Chapter 2-4400

• Compounds are described as? Give an example– Pure substance.

– H2O – all the molecules in the container must be exactly the same

Chapter 2-4600

• What is the definition of a mixture?– Blend of two or more pure substances

Chapter 2-4800

• 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

Chapter 2-41000

• Name the substance type. (Element, Compound, Homo or Hetero mixtures) H2O, chocolate chip cookies, salt water, salt & pepper, air, oxygen, granite– Compound, heterogeneous mixture,

homogeneous mixture, heterogeneous mixture, homogeneous mixture, element, heterogeneous mixture,

DA200

• Convert 5.438 J to calories?– 5.438J x (1cal) = 1.300 cal (4.184 J)

DA400

• Convert 5, 200 cal to Cal– 5,200 cal x (1 Cal) = 5.2 Cal (1000 cal)

DA600

• Convert 460 Cal to J?– 460 Cal x (1000 cal) x (4.184 J) =1,900,000 J or 1.9 x

106J

(1 Cal) x (1 cal)

DA800

• 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)

DA1000

• 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)

Final Jeopardy

• Why is Kelvin the SI unit for Temperature?– Temperature is a measure of Kinetic

Energy. 0 K represents zero particle movement.