Name
Period Date
1) What is science?
Answer questions 2-4 with this information:
Enrique was going to cook hamburgers for a cookout on his gas grill, but he could not get the grill to light. Enrique thought about this problem for a moment, then shut the valve on the gas tank and removed it from the grill. He then put his ear close to the valve and turned it on while he listened for the hissing sound of gas coming out of the tank.
2) What was Enrique's objective?
3) What was Enrique's hypothesis?
4) What was Enrique's experiment?
5) What is 155 lbs in kg? Show your dimensional analysis. 1 lbs = 2.2 kg
6) What is 8.66 kg in lbs? Show your dimensional analysis. 1 lbs = 2.2 kg
7) What is 19.4 dag in lbs? Show your dimensional analysis. 1 lbs = 2.2 kg
8) What is 713 feet per second in feet per minute? Show your dimensional analysis.

To get a driver's license in Rhode Island, you must have at least 50 supervised driving hours and pass the RI DMV road test. On the road test, drivers are evaluated against 45 criteria, and must pass at least 36 criteria.
Above is a graph which shows the relationship between supervised driving hours and scores on the road test. Use this graph to answer the next three questions.
9) Based on this graph, what is the relationship between supervised driving hours and road test score?
10) Based on this graph, what is the independent variable?
11) Rick plans to have his mom supervise him driving for at least 15 hours a month for the entire six months that he has his learner's permit. Based on this graph, what score should Rick expect on his road test?
12) Convert 0.003040 into scientific notation
13) Convert 551.3 into scientific notation
14) Convert 2.32 x 10 4 into standard notation

Ammonia (NH
3
) is a gas that can be dissolved in water. The graph above shows measurements of the amount of ammonia dissolved in water at different temperatures. Use this graph to answer the following questions.
15) What is the relationship described by the graph?
16) What is the slope of the line?
17) Interpolate the percent ammonia by weight in water at 80 °C.
18) What would you extrapolate for the percent ammonia by weight in water at 110 °C.
19) Extrapolations can be wrong. Why might this extrapolation be wrong?
20) What is 5.7 g in hg?
21) What is 12.55 dam in cm?

22) Looking at the graduated cylinder above, what is the proper way to report the volume?
23) What is the primary difference between exact and measured numbers?
24) Barrack did three trials to determine the density of ethanol. His data is shown below. If the actual density is 0.70 g/mL, calculate the error and percent error for Barrack's data.
Trial 1
Trial 2
Trial 3
Average density
(g/mL)
0.64
0.78
0.75
0.72
25) Which of Barrack's trials was the most accurate?
Barrack error
(g/mL)
26) Convert 7.40 x 10
-4 into standard notation percent error
27) Convert 60,700 into scientific notation

28) For each number below, write the number of significant figures in the box to its right number of sig figs number of sig figs number
206,000
0.00044
0.112
1000
11
0.00011
11,000
1.1
7.052
44.980
number
8.0
0.0080
8,000,000
80
9.0 x 10
-3
0.0306
0.7050
705.0
705
105,000.0
29) What is 4.06 + 16.2? (Be sure to use proper significant figures and rounding)
30) What is 1394 ÷ 26? (Be sure to use proper significant figures and rounding)
31) What is 0.051 - 6.00? (Be sure to use proper significant figures and rounding)
32) What is 0.0405 x 0.77? (Be sure to use proper significant figures and rounding)
33) What is 8.4 + 0.049? (Be sure to use proper significant figures and rounding)
34) Find the answer to the expression below.
Be sure to use proper significant figures and rounding.
=

Name
Period Date
1) What is science?
A tool mankind has developed to understand and predict nature
Answer questions 2-4 with this information:
Enrique was going to cook hamburgers for a cookout on his gas grill, but he could not get the grill to light. Enrique thought about this problem for a moment, then shut the valve on the gas tank and removed it from the grill. He then put his ear close to the valve and turned it on while he listened for the hissing sound of gas coming out of the tank.
2) What was Enrique's objective?
To find out why the grill was not lighting.
3) What was Enrique's hypothesis?
Enrique hypothesized that the gas tank was empty.
4) What was Enrique's experiment?
Opening the valve and listening for the hissing sound of gas coming out of the tank.
5) What is 155 lbs in kg? Show your dimensional analysis. 1 lbs = 2.2 kg
155 lbs 2.2 kgs
1 lbs
= 341 kg
6) What is 8.66 kg in lbs? Show your dimensional analysis. 1 lbs = 2.2 kg
8.66 kgs 1lbs
2.2 kg
= 3.94 lbs
7) What is 19.4 dag in lbs? Show your dimensional analysis. 1 lbs = 2.2 kg
19.4 dag 1 kg
100 dag
1 lbs
2.2 kg
= 0.0882 lbs
8) What is 713 feet per second in feet per minute? Show your dimensional analysis.
713 feet
1 sec
60 sec
1 min
=
42800 feet
1 min

To get a driver's license in Rhode Island, you must have at least 50 supervised driving hours and pass the RI DMV road test. On the road test, drivers are evaluated against 45 criteria, and must pass at least 36 criteria.
Above is a graph which shows the relationship between supervised driving hours and scores on the road test. Use this graph to answer the next three questions.
9) Based on this graph, what is the relationship between supervised driving hours and road test score?
An increase in supervised driving hours leads to an increase in road test score.
10) Based on this graph, what is the independent variable?
Supervised driving hours
11) Rick plans to have his mom supervise him driving for at least 15 hours a month for the entire six months that he has his learner's permit. Based on this graph, what score should Rick expect on his road test?
~40 correct
12) Convert 0.003040 into scientific notation
3.040 x 10
-3
13) Convert 551.3 into scientific notation
5.513 x 10
2
14) Convert 2.32 x 10 4
23,200 into standard notation

Ammonia (NH
3
) is a gas that can be dissolved in water. The graph above shows measurements of the amount of ammonia dissolved in water at different temperatures. Use this graph to answer the following questions.
15) What is the relationship described by the graph?
The amount of ammonia dissolved in water decreases with increases in the temperature of the water.
16) What is the slope of the line?
17) Interpolate the percent ammonia by weight in water at 80 °C.
30%
18) What would you extrapolate for the percent ammonia by weight in water at 110 °C.
15%
19) Extrapolations can be wrong. Why might this extrapolation be wrong?
Water enters into the gas phase at 100 °C, so no ammonia will be dissolved.
20) What is 5.7 g in hg?
0.057 hg
21) What is 12.55 dam in cm?
12,550 cm

22) Looking at the graduated cylinder above, what is the proper way to report the volume?
43.0 mL
23) What is the primary difference between exact and measured numbers?
The is no uncertainty about the value of an exact number, whereas there is uncertainty about the value of a measured number.
24) Barrack did three trials to determine the density of ethanol. His data is shown below. If the actual density is 0.70 g/mL, calculate the error and percent error for Barrack's data.
Trial 1
Trial 2
Trial 3
Average density
(g/mL)
0.64
0.78
0.75
0.72
25) Which of Barrack's trials was the most accurate?
Trial 3
26) Convert 7.40 x 10
-4
0.000740
into standard notation
27) Convert 60,700 into scientific notation
6.07 x 10
4
Barrack error
(g/mL)
-0.06
0.08
0.05
0.02
percent error
8.57
11.43
7.14
3.33

28) For each number below, write the number of significant figures in the box to its right number
206,000
0.00044
0.112
1000
11
0.00011
11,000
1.1
7.052
44.980
number of sig figs
3
2
3
1
2
2
2
2
4
5 number
8.0
0.0080
8,000,000
80
9.0 x 10
-3
0.0306
0.7050
705.0
705
105,000.0
number of sig figs
2
2
1
1
2
3
3
7
4
4
29) What is 4.06 + 16.2? (Be sure to use proper significant figures and rounding)
20.3
30) What is 1394 ÷ 26? (Be sure to use proper significant figures and rounding)
54
31) What is 0.051 - 6.00? (Be sure to use proper significant figures and rounding)
-5.95
32) What is 0.0405 x 0.77? (Be sure to use proper significant figures and rounding)
0.031
33) What is 8.4 + 0.049? (Be sure to use proper significant figures and rounding)
8.4
34) Find the answer to the expression below.
Be sure to use proper significant figures and rounding.
= 𝟏𝟗