Chapter 01
What Is Science?

True / False Questions
 
1. The property of mass is a measure of how heavy an object is. 
FALSE

Bloom's Level: 2. Understand
Section: 1.04
Topic: Study of Chemistry
 
2. A referent is a familiar object one can use to describe a property of a different object. 
TRUE

Bloom's Level: 3. Apply
Section: 1.01
Topic: Study of Chemistry
 
3. Pseudoscience is always used to mislead people. 
TRUE

Bloom's Level: 2. Understand
Section: 1.08
Topic: Scientific Method
 
4. A 100 g piece of iron has twice the volume as a 50 g piece of iron. 
TRUE

Bloom's Level: 4. Analyze
Section: 1.06
Topic: Study of Chemistry

5. The mass of 1000 cm3 of water is a kilogram. 
TRUE

Bloom's Level: 4. Analyze
Section: 1.06
Topic: Study of Chemistry
 
6. The density of a 100 g piece of iron is twice as great as the density of a 50 g piece of iron. 
FALSE

Bloom's Level: 4. Analyze
Section: 1.06
Topic: Study of Chemistry
 
7. A scientific law describes how certain parts of nature are observed to act. 
TRUE

Bloom's Level: 2. Understand
Section: 1.07
Topic: Study of Chemistry
 
8. The symbol  has the meaning of "is proportional to" 
TRUE

Bloom's Level: 1. Remember
Section: 1.06
Topic: Study of Chemistry
 
9. A theory is a hypothesis that has been shown to be correct by many experiments. 
FALSE

Bloom's Level: 2. Understand
Section: 1.07
Topic: Scientific Method

10. The symbol "∆" is used to refer to an object's density. 
FALSE

Bloom's Level: 1. Remember
Section: 1.06
Topic: Study of Chemistry

Multiple Choice Questions
 
11. Equations are used to 
A. describe a property.
B. define a concept.
C. describe how quantities change together.
D. All of the above.

Bloom's Level: 3. Apply
Section: 1.06
Topic: Study of Chemistry
 
12. Measured properties that have different values at different times are 
A. the result of measurement errors.
B. impossible.
C. called variables.
D. called scientific flukes.

Bloom's Level: 2. Understand
Section: 1.06
Topic: Study of Chemistry

13. In the text, the equation V = tk is used to describe the relationship between the volume of a gas tank and the time required to fill it. The symbol "k" 
A. has units of min/gal.
B. is a variable.
C. is a proportionality constant.
D. depends on the length of time.

Bloom's Level: 4. Analyze
Section: 1.06
Topic: Study of Chemistry
 
14. When two variables increase or decrease together in the same ratio they 
A. are in direct proportion.
B. are in inverse proportion.
C. can have numerical value only.
D. must have both value and units.

Bloom's Level: 2. Understand
Section: 1.06
Topic: Study of Chemistry
 
15. Measurement is the process of comparing a __________ to a well-defined __________. 
A. finding--result
B. unit--referent
C. property--referent
D. result--variable

Bloom's Level: 2. Understand
Section: 1.04
Topic: Study of Chemistry

16. Which one of the following is not a fundamental property? 
A. length
B. weight
C. time
D. mass

Bloom's Level: 2. Understand
Section: 1.04
Topic: Study of Chemistry
 
17. Suppose a cube of Jello is cut into two pieces. What property stays the same comparing the original piece with one of the new pieces? 
A. mass
B. volume
C. density
D. surface area

Bloom's Level: 4. Analyze
Section: 1.04
Topic: Study of Chemistry
 
18. When something cannot be directly observed, it can be represented by a 
A. hypothesis.
B. graph.
C. model.
D. theory.

Bloom's Level: 4. Analyze
Section: 1.07
Topic: Scientific Method

19. Which measure in the metric system is defined by using an object for a referent? 
A. length
B. mass
C. time
D. charge

Bloom's Level: 2. Understand
Section: 1.04
Topic: Study of Chemistry
 
20. The property of volume is a measure of 
A. how much matter an object contains.
B. the compactness of matter in a given space.
C. the extent of the surface of an object.
D. how much space an object occupies.

Bloom's Level: 2. Understand
Section: 1.06
Topic: Study of Chemistry
 
21. The basic means of acquiring understanding in the sciences is 
A. logical, well thought out conclusions.
B. thinking about facts that you can observe.
C. experimental evidence.
D. defined by a series of five steps called the scientific method.

Bloom's Level: 2. Understand
Section: 1.07
Topic: Scientific Method

22. Statistical tests on the result of an experiment show a cause and effect relationship each time the experiment is repeated. These experimental results are said to be 
A. valid.
B. conclusive.
C. reliable.
D. weird.

Bloom's Level: 3. Apply
Section: 1.07
Topic: Scientific Method
 
23. A tentative scientific explanation which may or may not be rejected upon further experimentation is called a 
A. theory
B. hypothesis
C. model
D. principle

Bloom's Level: 2. Understand
Section: 1.07
Topic: Scientific Method
 
24. Measurement is used to accurately 
A. describe an object or event.
B. compare object or events over a period of time.
C. find relationships that occur in nature.
D. All of the above.

Bloom's Level: 2. Understand
Section: 1.04
Topic: Study of Chemistry

25. Imagine a 10 g chunk of aluminum ( = 2.7 g/cm3) and a 10 g chunk of iron ( = 7.9 g/cm3). Which of the following is true? 
A. The chunk of iron is smaller than the chunk of aluminum.
B. The chunk of iron is more massive than the chunk of aluminum.
C. The chunk of aluminum is smaller than the chunk of iron.
D. Both objects have the same volume.

Bloom's Level: 4. Analyze
Section: 1.04
Topic: Study of Chemistry
 
26. The SI standard unit for mass is the 
A. pound.
B. newton.
C. kilogram.
D. mole.

Bloom's Level: 2. Understand
Section: 1.04
Topic: Study of Chemistry
 
27. The metric measurement that means one-hundredth of a meter is one 
A. decimeter.
B. hectoliter.
C. centimeter.
D. milligram.

Bloom's Level: 1. Remember
Section: 1.04
Topic: Study of Chemistry

28. Measurement information used to describe something is called 
A. a referent.
B. a value.
C. data.
D. a unit.

Bloom's Level: 2. Understand
Section: 1.04
Topic: Study of Chemistry
 
29. Which of the following is not a unit of density? 
A. g/cm3
B. L/kg
C. g/ml
D. kg/dm3

Bloom's Level: 4. Analyze
Section: 1.06
Topic: Study of Chemistry
 
30. What happens to the light intensity if you double the distance to the source? 
A. 1/2
B. 1/4
C. 1/3
D. 1/9

Bloom's Level: 3. Apply
Section: 1.06
Topic: Study of Chemistry
 
31. Misleading people into believing that something has scientific validity when it does not is 
A. basic science.
B. applied science.
C. natural science.
D. pseudoscience.

Bloom's Level: 2. Understand
Section: 1.08
Topic: Scientific Method

32. What is the proportional relationship between the number of cookies in the cookie jar and the time you have been eating the cookies? 
A. direct
B. inverse
C. square
D. inverse square

Bloom's Level: 3. Apply
Section: 1.06
Topic: Study of Chemistry
 
33. A movie projector makes a 1 m by 1 m image when projecting 1 m from a screen, a 2 m by 2 m image when projecting 2 m from the screen, and a 3 m by 3 m image when projecting 3 m from the screen. What is the proportional relationship between the distance from the screen and the area of the image? 
A. direct
B. inverse
C. square
D. inverse square

Bloom's Level: 3. Apply
Section: 1.06
Topic: Study of Chemistry
 
34. A movie projector makes a 1 m by 1 m image when projecting 1 m from a screen, a 2 m by 2 m image when projecting 2 m from the screen, and a 3 m by 3 m image when projecting 3 m from the screen. What is the proportional relationship between the distance from the screen and the intensity of the light falling on the screen? 
A. direct
B. inverse
C. square
D. inverse square

Bloom's Level: 3. Apply
Section: 1.06
Topic: Study of Chemistry

35. A student believes that cobwebs form from dust since they always seem to appear when housekeeping chores are ignored. This student has made a statement that is 
A. a hypothesis.
B. conjecture.
C. a scientific law.
D. theory.

Bloom's Level: 2. Understand
Section: 1.07
Topic: Scientific Method
 
36. After years of observing, a homemaker concluded "Ugly rugs never wear out." This person has made a statement that is 
A. a hypothesis.
B. conjecture.
C. a scientific law.
D. theory.

Bloom's Level: 2. Understand
Section: 1.07
Topic: Scientific Method
 
37. According to the scientific method, what needs to be done to move beyond conjecture or simple hypotheses in a person's understanding of their physical surroundings? 
A. Make an educated guess.
B. Conduct a controlled experiment.
C. Find an understood model with answers.
D. Search for answers on the Internet.

Bloom's Level: 2. Understand
Section: 1.07
Topic: Scientific Method

38. In general, scientific investigations have which activities in common? 
A. state problem, gather data, make hypothesis, test, make conclusion
B. collect observations, develop explanations, test explanations
C. observe nature, reason an explanation for what is observed
D. observe nature, collect data, modify data to fit scientific model

Bloom's Level: 2. Understand
Section: 1.07
Topic: Scientific Method
 
39. A 1 kilometer length is the same as how many meters? 
A. 0.001
B. 0.01
C. 10
D. 1000

Bloom's Level: 1. Remember
Section: 1.05
Topic: Study of Chemistry
 
40. One-half liter of water is the same volume as 
A. 5000 mL
B. 0.5 cc
C. 500 cm3
D. 5 dm3

Bloom's Level: 2. Understand
Section: 1.05
Topic: Study of Chemistry