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What type of measurement involves observing and describing events?
(a) quantitative
(b) observations
(c) qualitative
(d) hypothesis
(c) qualitative
What type of measurement is numerical and involves counting?
(a) qualitative
(b) quantitative
(c) hypothetical
(d) testable
(b) quantitative
What do we call something that has size or amount?
(a) data
(b) measurement
(c) unit
(d) quantity
(d) quantity
Which method expresses very large or small numbers?
(a) scientific notation
(b) scientific method
(c) significant figures
(d) dimensional analysis
(a) scientific notation
Convert 463,000 to scientific notation.
(a) 4.63 × 10⁵
(b) 463 × 10³
(c) 0.463 × 10⁶
(d) 46.3 × 10⁴
(a) 4.63 × 10⁵
When is a number expressed in scientific notation less than 1?
(a) positive exponent
(b) negative exponent
(c) fraction
(d) zero
(b) negative exponent
What does an exponent of 5 in scientific notation mean?
(a) number < 1
(b) decimal moves 5 right
(c) decimal moves 5 left
(d) very small number
(c) decimal moves 5 left
Express 985 in scientific notation.
(a) 9.85 x 10²
(b) 0.985 x 10³
(c) 98.5 x 10¹
(d) 985 x 10⁰
(a) 9.85 x 10²
Convert the following number into correct scientific notation:
0.0000000000430200
(a) 4.302×10−11
(b) 4.30200×10−11
(c) 4.30200×10−11
(d) 4.30200×1011
(b) 4.30200×10−11
If six darts hit the board, one near the bull’s eye, what is true?
(a) high accuracy, high precision
(b) high accuracy, low precision
(c) low accuracy, low precision
(d) low accuracy, high precision
(b) high accuracy, low precision
Given the density of tin is 7.31 g/cm³, who is most precise?
Student A: 7.28, 7.39, 7.50;
Student B: 7.37, 7.32, 7.28;
Student C: 7.25, 7.24, 7.22
Student C: 7.25, 7.24, 7.22
Measurements: 7.25,7.24,7.22
Range: 7.25−7.22=0.03
How do we describe the closeness of repeated measurements to each other?
(a) precision
(b) significance
(c) accuracy
(d) percent error
(a) precision
Which statement is true for a measurement with high accuracy?
(a) repeated measurements close
(b) close to accepted value
(c) few significant digits
(d) in scientific notation
(b) close to accepted value
Which statement is true of low precision measurements?
(a) Close to same value
(b) Close to accepted value
(c) Not close to one another
(d) Digits are not significant
(c) Not close to one another
Find the percent error for a melting point of 45.87°C vs accepted 46.5°C.
(a) 1.4%
(b) 2.5%
(c) 1.7%
(d) 1.1%
(a) 1.4%
Which of the following is NOT correct?
(a) 100 cg = 1 g
(b) 1000 mm = 1 m
(c) 1 cm³ = 1 mL
(d) 10 kg = 1 g
(d) 10 kg = 1 g
Calculate average density for Student A:
Student A: 7.28, 7.39, 7.50;
(a) 7.28
(b) 7.39
(c) 7.28
(d) 7.31
(b) 7.39
What is the measure of Earth's gravity pull on an object?
(a) weight
(b) mass
(c) volume
(d) force
(a) weight
How many microliters are in 0.00528 liters?
(a) 528
(b) 5280
(c) 52800
(d) 528000
(b) 5280
In which type of measurement are the zeros always considered non-significant placeholders?
(a) Trailing zeros with a decimal point.
(b) Captive zeros between nonzero digits.
(c) Leading zeros in a number less than one.
(d) Trailing zeros with no decimal point.
(c) Leading zeros in a number less than one.
Calculate density of a sample of silicon with volume 5.95 cm³ and density 2.33 g/cm³.
(a) 12.95 g
(b) 13.87 g
(c) 14.00 g
(d) 15.00 g
(b) 13.87 g
A sample of iron with mass 16.0 g and volume 2.03 cm³ has a density of:
(a) 7.87 g/cm³
(b) 8.00 g/cm³
(c) 7.50 g/cm³
(d) 8.50 g/cm³
(a) 7.87 g/cm³
The distance between two objects is measured to be 25 meters. What quantity is being measured?
(a) Mass
(b) Length
(c) Volume
(d) Area
(b) Length
The volume of a rectangular object is found by multiplying length x width x height.
Which derived unit represents volume?
(a) g³
(b) cm³
(c) m²
(d) g/cm³
(b) cm³
Convert 1.0 km/h to m/s.
(a) 1000 m/s
(b) 3.6 m/s
(c) 0.27 m/s
(d) 0.28 m/s
(d) 0.28 m/s