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1. What is a unifying principle that explains a body of experimental observations? A. Law 
B. Hypothesis 
C. Theory 
D. Phenomena E. Prediction 
2. Which of the following is a tentative explanation for a set of observations? A. Law 
B. Hypothesis 
C. Theory 
D. Phenomena E. Prediction 
3. What is the term used for findings that are summarized based on a pattern or trend? A. Law 
B. Hypothesis 
C. Theory 
D. Phenomena E. Prediction 
4. Which of the following activities is not a part of good scien...
Chapter 01 - Basic Concepts of Chemistry 
1. A hypothesis is a ________. 
a. well-tested unifying principle that explains a body of facts 
b. setofexperimentsdesignedtotestatheory 
c. tentative explanation or predication based upon experimental observations 
d. setofquantitativedata 
e. concise statement of behavior that is always the same under the same conditions 
 ANSWER: POINTS: 
HAS VARIABLES: TOPICS: 
NOTES: 
c 
1 
True 
1.1 Chemistry and Its Methods Dynamic Question 
2. All of the followi...
Chapter 1—Living in a World of Chemistry 
 MULTIPLE CHOICE 
1. Which activity comes first in the scientific method? a. conclusion 
b. hypothesis 
c. experimentation d. observation 
ANS: D 
2. Which is considered a physical science? a. physics 
b. biology c. zoology d. botany 
ANS: A 
3. A scientist is trying to make a new insecticide that will be more toxic to flies, but less toxic to humans than insecticides now available. The scientist is engaged in 
a. basic research. 
b. applied research. ...
CHAPTER 3: Chemical Foundations: Elements, Atoms, and Ions 
 
	1.	What is the most abundant element on the Earth (including the crust, oceans, and atmosphere)? 
A. 
silicon 
B. 
oxygen 
C. 
hydrogen 
D. 
iron 
E. 
carbon 
 
 
ANS:	B	PTS:	1	TOP:	Test: Chapter Test	 
NOT:	worldofchem_2013	 
 
	2.	What is the most abundant element found in the human body? 
A. 
oxygen 
B. 
water 
C. 
hydrogen 
D. 
calcium 
E. 
carbon 
 
 
ANS:	A	PTS:	1	TOP:	Test: Chapter Test	 
NOT:	worldofchem_2013	 
 
	3.	The symb...
Chapter 3 -- Alkenes and Alkynes 
 
MULTIPLE CHOICE 
 
	1.	Which of the following dienes can be classified as conjugated? 
A) 
CH3CH=C=CH2 
B) 
CH3CH=CHCH=CH2 
C) 
CH2=CHCH2CH=CH2 
D) 
CH3CH=CHCH2CH2CH=CH2 
E) 
CH2=C=CH2 
 
 
ANS:	B	TOP:	Alkenes and Alkynes: Nomenclature and Structure 
 
	2.	Which of the following molecular formulas could not represent an alkene? 
A) 
C5H10 
B) 
C7H14 
C) 
C10H20 
D) 
C27H56 
E) 
C31H62 
 
 
ANS:	D	TOP:	Alkenes and Alkynes: Nomenclature and Structure 
 
	3.	What...