Chemistry: Matter and Change

Section 1: Energy

Self Check Quizzes

1
If 5.0 grams of copper cools from 35.0°C to 22.6°C and loses 23.6 joules of heat, what is the specific heat of copper?
A)0.076 J/(g °C)
B)3.8 x 102 J/(g·°C)
C)0.38 J/(g °C)
D)0.62 J/(g °C)
2
The same amount of heat is added to a 10-g sample of each of the following metals. If each metal is initially at 20.0°C, which metal will reach the highest temperature?
A)beryllium 1.82 J/(g °C)
B)calcium 0.653 J/(g °C)
C)copper 0.385 J/(g °C)
D)gold 0.129 J/(g °C)
3
One calorie is equal to 4.184J. How much energy in joules is supplied by a breakfast bar containing 170 nutritional calories?
A)170 J
B)711 J
C)1.7 x 105 J
D)7.11 x 105 J
4
Before the water behind the dam is taken in through the water intake valve, what sort of useful energy does it possess?

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A)heat energy
B)kinetic energy
C)potential energy
D)mass energy
5
A 5 gram piece of aluminum foil at 100 degrees C is dropped into a 25 gram container of water at 20 degrees C. What is the final temperature of the aluminum?

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A)16.4 degrees C
B)23.6 degrees C
C)96.4 degrees C
D)103.6 degrees C
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