Question 1

Which of the following statements about the metric system is correct?

Accepted Answer

It is based on powers of 10, making conversions straightforward.

Question 2

A forensic analyst finds a bullet fragment with a mass of 32.4 g that displaces 2.86 mL of water. What is the density of the lead in $\mathrm{g/cm^3}$?

Accepted Answer

$11.3\ \mathrm{g/cm^3}$

Question 3

Which of the following is an intensive property?

Accepted Answer

Density

Question 4

Convert 29 $^\circ$C to Kelvin.

Accepted Answer

$302.15\ \mathrm{K}$

Question 5

Which of the following numbers has 4 significant figures?

Accepted Answer

100.0

Question 6

A patient is prescribed 0.30 grams of a medication. The medication is available as 75 mg/5 mL. How many teaspoons should be administered? ($1\ \mathrm{g} = 1000\ \mathrm{mg}$, $1\ \mathrm{tsp} = 5\ \mathrm{mL}$)

Accepted Answer

1 tsp

Question 7

Which of the following best describes accuracy?

Accepted Answer

How close a measurement is to the accepted value

Question 8

Round 0.05878 to three significant figures.

Accepted Answer

0.059

Question 9

A sample of copper displaces 9.58 mL of water. If the density of copper is $8.96\ \mathrm{g/cm^3}$, what is the mass of the sample?

Accepted Answer

$85.8\ \mathrm{g}$

Question 10

Which of the following is the correct scientific notation for 0.000450?

Accepted Answer

$4.50 	imes 10^{-4}$

Question 11

A geologist collects a sample of galena with a mass of 60.0 g. The water level rises from 40.00 mL to 46.45 mL when the sample is placed in water. What is the density of the mineral in $\mathrm{g/cm^3}$?

Accepted Answer

$9.30\ \mathrm{g/cm^3}$

Question 12

Which of the following is NOT a base SI unit?

Accepted Answer

Gram

Question 13

A student measures the length of an object four times and gets: 0.480 mm, 0.495 mm, 0.555 mm, 0.400 mm. The actual length is 0.435 mm. Which statement is correct?

Accepted Answer

The results are neither precise nor accurate.

Question 14

Which of the following is the correct formula for converting Celsius to Fahrenheit?

Accepted Answer

$T_F = 1.8(T_C) + 32$

Question 15

A 4.00-qt sample of antifreeze weighs 9.26 lb. What is the density in $\mathrm{g/mL}$? ($1\ \mathrm{lb} = 453.59\ \mathrm{g}$, $1\ \mathrm{L} = 1.0567\ \mathrm{qt}$, $1\ \mathrm{mL} = 0.001\ \mathrm{L}$)

Accepted Answer

$1.03\ \mathrm{g/mL}$

Question 16

Which of the following is a correct conversion factor for inches to centimeters?

Accepted Answer

$\frac{2.54\ \mathrm{cm}}{1\ \mathrm{in.}}$

Question 17

Which of the following is an example of a measured number?

Accepted Answer

The mass of a rock measured with a balance

Question 18

Which of the following is true about significant figures in multiplication and division?

Accepted Answer

The result should have as many significant figures as the value with the least significant figures.

Question 19

A graduated cylinder contains 53.55 mL of water. After an object is placed in it, the volume rises to 67.95 mL. If the density of the object is $2.85\ \mathrm{g/mL}$, what is the mass of the object?

Accepted Answer

$41.7\ \mathrm{g}$

Measurement, Density, and Reliability in Chemistry: Foundations and Problem-Solving

Study Guide - Practice Questions

Study Guide - Flashcards