Question 1

Insight into Aluminum 
Use the web to determine the difference in how much aluminum is recycled in states where there are deposits on aluminum cans versus states in which recycling is voluntary. What is the most reliable way to estimate this value? What uncertainty is there in this estimate?

Accepted Answer

The difference in aluminum recycling rates between states with deposit systems and states with voluntary recycling programs can be determined by researching and comparing the recycling data for each type of program.

The most reliable way to estimate this value would be to gather official recycling data from government agencies or environmental organizations. This data would provide a comprehensive and accurate picture of the recycling rates in each type of program.

However, there may be some uncertainty in this estimate due to factors such as reporting inaccuracies, variations in data collection methods, and differences in the effectiveness of recycling programs within each state. Additionally, the availability of current and comprehensive data for all states may also impact the accuracy of the estimate. Therefore, it is important to consider these potential sources of uncertainty when interpreting the results.

Question 2

The Study of Chemistry 
Why do physical properties play a role in chemistry if they do not involve any chemical changes?

Accepted Answer

Physical properties can be used to identify substances in qualitative and quantitative analysis and can provide a wide range of useful information.

Question 3

Observations and Models 
James provides Martha with two statements: "All bald men are intelligent" and "Lance is bald." Based on the statements, Martha concludes that Lance is intelligent. What type of reasoning (deductive or inductive)did Martha use to arrive at this conclusion?

Accepted Answer

Martha used deductive reasoning to arrive at this conclusion. The two statements represent pieces of information that are processed and lead to the conclusion that "Lance is intelligent."

Question 4

Numbers and Measurements 
Convert the value 38.4 ppm into ppb.

Accepted Answer

The answer of Numbers and Measurements 
Convert the value 38.4...

Question 5

Numbers and Measurements 
What is the difference between a qualitative and a quantitative measurement?

Accepted Answer

The answer of Numbers and Measurements 
What is the difference...

Question 6

Observations and Models 
What is a law of nature? Are all scientific laws examples of laws of nature?

Accepted Answer

The answer of Observations and Models 
What is a law...

Question 7

Numbers and Measurements 
Oxygen boils at − 186 ° C. What is this temperature in Kelvin?

Accepted Answer

The answer of Numbers and Measurements 
Oxygen boils at −...

Question 8

Numbers and Measurements 
Use the web to determine how the Btu unit was initially established. For the engineering applications where this unit is still used today, why is it a sensible unit?

Accepted Answer

The answer of Numbers and Measurements 
Use the web to...

Question 9

Insight into Aluminum 
What properties of aluminum might cause you concern if you had to use the aluminum tableware that Napoleon employed to impress his guests?

Accepted Answer

The answer of Insight into Aluminum 
What properties of aluminum...

Question 10

Insight into Aluminum 
Use the web to determine the amount of aluminum used in the US in a single year. What is the primary use for this material?

Accepted Answer

The answer of Insight into Aluminum 
Use the web to...

Question 11

The Study of Chemistry 
All molecules attract each other to some extent, and the attraction decreases as the distance between particles increases. Based on this idea, which state of matter would you expect has the strongest interactions between particles----: solids, liquids or gases?

Accepted Answer

The answer of The Study of Chemistry 
All molecules attract...

Question 12

The Study of Chemistry 
Do the terms element and atom mean the same thing? If not, how do they differ?

Accepted Answer

The answer of The Study of Chemistry 
Do the terms...

Question 13

Observations and Models 
What is the difference between a hypothesis and a question?

Accepted Answer

The answer of Observations and Models 
What is the difference...

Question 14

Observations and Models 
Two golfers are practicing shots around a putting green. Each golfer takes 20 shots. Golfer 1 has 7 shots within 1 meter of the hole, and the other 13 shots are scattered around the green. Golfer 2 has 17 shots that go into a small sand trap near the green and three just on the green near the trap. Which golfer is more precise? Which is more accurate?

Accepted Answer

The answer of Observations and Models 
Two golfers are practicing...

Question 15

The Study of Chemistry 
Explain chemical properties with an example.

Accepted Answer

The answer of The Study of Chemistry 
Explain chemical properties...

Question 16

Numbers and Measurements 
The largest computers now include disk storage space measured in terabytes. How many bytes are in a terabyte? (Recall that in computer terminology, the prefix is only "close" to the value it designates in the metric system.)

Accepted Answer

The answer of Numbers and Measurements 
The largest computers now...

Question 17

Numbers and Measurements 
What is a "derived" unit?

Accepted Answer

The answer of Numbers and Measurements 
What is a "derived"...

Question 18

The Study of Chemistry 
Which of the following items are matter and which are not? 
a)A flashlight 
b)Sunlight 
c)An echo 
d)Air at sea level 
e)Air at the top of Mount Everest

Accepted Answer

The answer of The Study of Chemistry 
Which of the...

Question 19

The Study of Chemistry 
How can a liquid be distinguished from a fine powder? What type of experiment or observation might be undertaken?

Accepted Answer

The answer of The Study of Chemistry 
How can a...

Question 20

Observations and Models 
Data that have a small random error may be: 
 (accurate, precise, both, or neither).

Accepted Answer

The answer of Observations and Models 
Data that have a...

Quiz 1: Introduction to Chemistry

Insight into Aluminum Use the web to determine the difference in how much aluminum is recycled in states where there are deposits on aluminum cans versus states in which recycling is voluntary. What is the most reliable way to estimate this value? What uncertainty is there in this estimate?

The Study of Chemistry Why do physical properties play a role in chemistry if they do not involve any chemical changes?

Observations and Models James provides Martha with two statements: "All bald men are intelligent" and "Lance is bald." Based on the statements, Martha concludes that Lance is intelligent. What type of reasoning (deductive or inductive)did Martha use to arrive at this conclusion?

Numbers and Measurements Convert the value 38.4 ppm into ppb.

Numbers and Measurements What is the difference between a qualitative and a quantitative measurement?

Observations and Models What is a law of nature? Are all scientific laws examples of laws of nature?

Numbers and Measurements Oxygen boils at − 186 ° C. What is this temperature in Kelvin?

Numbers and Measurements Use the web to determine how the Btu unit was initially established. For the engineering applications where this unit is still used today, why is it a sensible unit?

Insight into Aluminum What properties of aluminum might cause you concern if you had to use the aluminum tableware that Napoleon employed to impress his guests?

Insight into Aluminum Use the web to determine the amount of aluminum used in the US in a single year. What is the primary use for this material?

The Study of Chemistry All molecules attract each other to some extent, and the attraction decreases as the distance between particles increases. Based on this idea, which state of matter would you expect has the strongest interactions between particles----: solids, liquids or gases?

The Study of Chemistry Do the terms element and atom mean the same thing? If not, how do they differ?

Observations and Models What is the difference between a hypothesis and a question?

The Study of Chemistry Explain chemical properties with an example.

Numbers and Measurements The largest computers now include disk storage space measured in terabytes. How many bytes are in a terabyte? (Recall that in computer terminology, the prefix is only "close" to the value it designates in the metric system.)

Numbers and Measurements What is a "derived" unit?

The Study of Chemistry Which of the following items are matter and which are not? a)A flashlight b)Sunlight c)An echo d)Air at sea level e)Air at the top of Mount Everest

The Study of Chemistry How can a liquid be distinguished from a fine powder? What type of experiment or observation might be undertaken?

Observations and Models Data that have a small random error may be: (accurate, precise, both, or neither).