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24 Cards in this Set

  • Front
  • Back
  • 3rd side (hint)
What is the term for a tentative proposal of a scientific principle that attempts to explain the meaning of a set of data collected in an experiment?


a. estimation

b. hypothesis

c. natural law

d. theory

e. none of the above
b - Hypothesis
Who is generally considered to be the founder of the scientific method?


a. Aristotle

b. Robert Boyle

c. John Dalton

d. Antoine Lavoisier

e. none of the above
b - Robert Boyle
What question can we ask in order to distinguish between a theory and a law?


a. Does the statement concern atoms?

b. Does the statement concern gases?

c. Is the statement comprehensible?

d. Is the statement measurable?

e. none of the above
D - Is the statement measurable?
Who is generally considered to be the founder of modern chemistry?


a. Aristotle

b. Robert Boyle

c. John Dalton

d. Antoine Lavoisier

e. none of the above
D - Antoine Lavoisier
What is the term for the digits in a measurement that exceed the certainty of the instrument?


a. inexact digits

b. nonsignificant digits

c. significant digits

d. uncertain digits

e. none of the above
B - Nonsignificant digits
What is the term for a method of expressing a value by placing a decimal after the first significant digit and indicating the magnitude using a power of 10?


a. calculator notation

b. engineering notation

c. fixed decimal notation

d. scientific notation

e. none of the above
D - Scientific Notation
What is the term for the inexactness of an instrumental measurement?


a. accuracy

b. error

c. precision

d. uncertainty

e. none of the above
D - Uncertainty
Which of the following quantities can be measured exactly?


a. length

b. mass

c. volume

d. time

e. none of the above
E - none of the above
How many significant digits are in the length measurement 100.60 centimeters?


a. 1

b. 2

c. 3

d. 4

e. none of the above
E - none of the above
... The first two zeros are between significant figures and the last zero is to the right of a decimal and after a figure.
How many significant digits are in the length measurement 61,000 centimeters?


a. 2

b. 3

c. 4

d. 5

e. none of the above
a - 2
Round off the following measurement to three significant digits: 1255 g.


a. 125 g

b. 126 g

c. 130 g

d. 1250 g

e. 1260 g
E - 1260 g
Add 7.77 g to 11.666 g and round off the answer.


a. 19.0 g

b. 19.4 g

c. 19.43 g

d. 19.44 g

e. 19.436 g
D - 19.44 g
The rules of addition state that the answer must reflect the figures in the problem to the 10ths or 100ths. So this case the 7.77 g is to the 100ths place therefore the answer must reflect that unlike mulitiplication.
Multiply 2.505 m by 1.75 m by 1.0 m and round off the answer.


a. 4 m3

b. 4.4 m3

c. 4.38 m3

d. 4.384 m3

e. 4.0 m3
B - 4.4 m3
Answer must be rounded to the nearest 10th like 1.0 m listed in problem.
Express 0.000 000 000 000 1 in exponential form.


a. 1  10–13

b. 1  10–12

c. 1  10–1

d. 1  1013

e. none of the above
a. 1 x 10–13
Express the exponential number 6.26 x 10 to the 3rd as an ordinary number.


a. 0.006 26

b. 0.000 626

c. 6,260

d. 62,600

e. none of the above
c. 6,260
Which of the following unit factors is derived from: 1 mile = 1760 yards?


a. 1 mile /1 yard

b. 1 mile /1760 yards

c. 1 yard/1760 miles

d. 1760 miles/1 yard

e. 1760 miles/1760 yards
b. 1 mile /1760 yards
If a marathon race is 26.2 miles, what is the distance in kilometers?
(Given: 1 mile = 1.61 kilometer)


a. 0.0615 kilometer

b. 16.3 kilometers

c. 42.2 kilometers

d. 61.5 kilometers

e. 42,200 kilometers
c. 42.2 kilometers
If the mass of Mars is 6.42  1023 kilograms, what is the mass in metric tons?
(Given: 1 metric ton = 1000 kilograms)


a. 1.55  10–25 metric tons

b. 1.55  10–21 metric tons

c. 6.42  1017 metric tons

d. 6.42  1020 metric tons

e. 6.42  1026 metric tons
d. 6.42 x 1020 metric tons
A sample of rose gold is: 12.0 grams gold, 5.0 grams silver, and 7.0 grams copper by mass. What is the percent of copper in the sample?


a. 12%

b. 29%

c. 50%

d. 58%

e. 75%
b. 29%

put the 7 g over the ADDED total on bottom 7/24 x 100 =
29.1666666 = 29%
If a 5¢ coin has a mass of 5.07 g and is 75.0% copper, what is the mass of nickel in the 5¢ coin?


a. 0.203 g

b. 0.676 g

c. 1.27 g

d. 1.69 g

e. 3.80 g
e. 3.80 g
Take the total (5.07g) over 1 times 75/100 (75% of 100%).
So 5.07 times 75 divided by 100 equals 3.78 g = 3.80 because it must be rounded to three significant figures.
A ruby gemstone contains 52.7% aluminum, 47.1% oxygen, and small traces of chromium. If the ruby was found to contain 0.125 g of aluminum, what is the mass of the gemstone?


a. 0.0659 g

b. 0.125 g

c. 0.237 g

d. 0.265 g

e. 0.625 g
c. 0.237 g

The problem is giving more info. than needed. Simple take the amount of Aluminum .125 g and times it by 100 % (parts) over it's percentage of 52.7 g/al. The simple answer being .237
What is the average speed in feet per second of a world-class swimmer who
swims a 400.0-m freestyle race in 3 min, 49.05 s? (Given: 1 m = 3.281 ft.)


a. 0.5323 ft/s

b. 1.746 ft/s

c. 5.730 ft/s

d. 114.6 ft/s

e. 376.0 ft/s
c. 5.730 ft/s

c. 5.730 ft/s

400/1 x 3.281 ft/1 = 1312.4
Convert 3 minutes into seconds so 180 seconds plus 49.05 = 229.05 seconds.
Then
1312.4 ft/229.05 = 5.730 ft/s
Calculate the volume of Earth assuming it is spherical and has a radius (r) of
6370 km. The volume of a sphere equals 4(pie)r3/3, where (pie) is the constant 3.14.
So = 4(3.14) (6370km)3 and all of that over /3


a. 2.58  1011 km3

b. 3.45  1011 km3

c. 6.37  1011 km3

d. 1.03  1012 km3

e. 1.08  1012 km3
e. 1.08 x 1012 km3

4(3.14) (6370km)3 / 3 =
1.08 x 1012 km3
How many significant digits are justified by the unit equation 1 yard = 3 feet?


a. 1

b. 2

c. 3

d. infinite

e. impossible to determine
d. infinite