Tools, Technology, and Measurement Answers

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Which tool is used to measure a single, specific volume of liquid?

A
a beaker
B
a graduated cylinder
C
a buret
D
a volumetric flask
2
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Heather is doing an acid-base reaction. She has 25.00 mL of hydrochloric acid of unknown concentration in a flask. She wants to add a basic solution to the acid drop by drop, until all the acid has reacted. Which tool would be best for adding the basic solution dropwise and for most precisely measuring the volume of solution added?

A
a graduated cylinder
B
an eye dropper
C
a beaker
D
a buret
3

A researcher wants to show the effects of slight changes in pH on the reproductive rates of fish in a lake. Why would a table be more suitable than a graph to show the data?

A
Tables better illustrate precise data points.
B
Tables have data points with more significant figures.
C
Tables better illustrate the comparison of two different data sets.
D
Tables are better suited for displaying real-world data.
4

Which of these statements correctly compares probeware (such as an electronic temperature probe) to traditional analog tools (such as a liquid-based thermometer)?

A
Measurements by traditional analog tools are good to a larger number of significant figures.
B
Measurements by traditional analog tools are less prone to experimental error.
C
Probeware is typically very difficult to transport.
D
Probeware is useful for obtaining many measurements in rapid succession.
5

Which of these time measurements is the smallest?

A
0.02 seconds
B
0.02 teraseconds
C
2,500 milliseconds
D
25,000 nanoseconds
6

Which of these units is most appropriate to use when measuring the mass of a person?

A
gram
B
milligram
C
kilogram
D
megagram
7

Which of these units is most appropriate for describing a 26-mile marathon run?

A
terameter
B
gigameter
C
kilometer
D
nanometer
8

Silus wants to monitor the temperature of a reaction every 0.5 seconds for 30 minutes. He plans to generate a graph of the temperature values over time and insert the graph into a text document. Which pair of tools would be best for Silus to use?

A
a liquid-based thermometer and a graphing calculator
B
a liquid-based thermometer and a computer
C
an electronic temperature probe and a computer
D
an electronic temperature probe and a graphing calculator
9

Isabel wants to determine the mass of a metal block. What is the SI unit for mass?

A
pound
B
quart
C
kilogram
D
liter
10

Eleanor wants to show her class a comparison of melting rates between two different solids when heat is applied. Why would a graph be more suitable than a table to show her data?

A
Graphs better illustrate precise data points.
B
Graphs have data points with more significant figures.
C
Graphs better illustrate the comparison of two different data sets.
D
Graphs are better suited for numeric analysis.

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