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G e n e r a l O r g a n i c a n d B i o l o g i c a l C h e m i s t r y S t r u c t u r e s o f L i f e 6 t h
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D o w n l o a d I m m e d i a t e l y A f t e r T h e P u r c h a s e Exam
Name___________________________________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1)Water, H 2O, is an example of a(n)
A)wave.
B)type of energy.
C)chemical.
D)electric charge.
E)element.1)
2)In this list, which substance can be classified as a chemical?
A)salt
B)cold
C)heat
D)sleep
E)temperature2)
3)One example of a chemical used in toothpaste is
A)sugar.
B)calcium carbonate.
C)sulfur.
D)chlorine.
E)carbon dioxide.3)
4)Which of the following is NOT a chemical?
A)salt
B)water
C)carbon dioxide
D)light
E)sugar4)
5)Sodium fluorophosphate is a chemical used in toothpaste to
A)keep the paste from spoiling.
B)strengthen tooth enamel.
C)make the paste white.
D)disinfect the toothbrush.
E)remove plaque.5)
6)Titanium dioxide is a chemical used in toothpaste to
A)disinfect the toothbrush.
B)remove plaque.
C)strengthen tooth enamel.
D)keep the paste from spoiling.
E)make the toothpaste white.6)
1 7)When a part of the body is injured, substances called ________ are released.
A)pain relievers
B)nitrogen oxides
C)prostaglandins
D)aspirins
E)chlorofluorocarbons7)
8)Which of the following is a chemical?
A)light B)sound C)noise D)heat E)sugar8)
9)You notice that there is more traffic between 8:00 and 9:00 AM. This would be a(n)
A)observation. B)conclusion/theory.
C)hypothesis. D)experiment.9)
10)There is more traffic between 8:00 and 9:00 AM because most people start work at 9:00 AM. This
would be a(n)
A)observation. B)experiment.
C)conclusion/theory. D)hypothesis.10)
11)In order to enhance your learning in chemistry, you should NOT
A)wait until the night before the exam to study.
B)be an active learner.
C)form a study group.
D)study a little every day.
E)go to professor's office hours.11)
12)Which of the following would NOT be part of a study plan to learn chemistry?
A)skip your professor's office hours
B)read the chapter before class
C)work the sample problems
D)study a little every day
E)form a study group12)
13)In the number 12.3 45, the 4 is in the ________ place.
A)tens
B)ones
C)tenths
D)hundredths
E)thousandths13)
14)In the number 12.345, the 1 is in the ________ place.
A)tens
B)ones
C)tenths
D)hundredths
E)thousandths14)
2 15)In the number 12. 345, the 3 is in the ________ place.
A)tens
B)ones
C)tenths
D)hundredths
E)thousandths15)
16)The product of ( -4) × (-5) is
A).1 B)0 C)-20 D)-1 E).2016)
17)For the equation 4 x+ 2 = 10 , x equals
A)2 B)12 C)3 D)-2 E)817)
18)For the equation 6 y-20 =-2 , y equals
A)-2 B)4 C)-3 D)2 E)318)
19)For the equation : -10 - (-4) =
A)6 B)-14 C)4 D)-6 E)1419)
20)12 is what percentage of 36?
A)3% B)330% C)30% D)12% E)33%20)
21)16 is what percentage of 80?
A)50% B)2% C)5% D)200% E)20%21)
22)On the graph, what is the temperature after 40 minutes?
A)36 °C B)26 °C C)40 °C D)57 °C E)44 °C22)
3
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