Question 1

Which of the following best describes a homogeneous mixture?

Accepted Answer

A mixture in which the composition is uniform throughout.

Question 2

Which of the following is an example of a physical change?

Accepted Answer

Dissolving sugar in water

Question 3

A sample of copper wire (density = $8.96\ \mathrm{g/cm^3}$) has a diameter of $0.32\ \mathrm{mm}$. If a sample of this copper wire has a mass of $21.7\ \mathrm{g}$, how long is the wire? (Assume the wire is a perfect cylinder.)

Accepted Answer

$1200\ \mathrm{cm}$

Question 4

Which of the following is NOT an example of an intensive property?

Accepted Answer

Mass

Question 5

Convert $0.00384$ to scientific notation with the correct number of significant figures.

Accepted Answer

$3.84 	imes 10^{-3}$

Question 6

Which of the following is a chemical property?

Accepted Answer

Iron rusts when exposed to oxygen gas.

Question 7

A cube of silver has a density of $10.5\ \mathrm{g/cm^3}$ and measures $0.36\ \mathrm{m}$ on each side. What is its mass in kilograms?

Accepted Answer

$48600\ \mathrm{g}$

Question 8

Which of the following is an extensive property?

Accepted Answer

Mass

Question 9

Which of the following is the correct SI unit for measuring the area of a laboratory bench?

Accepted Answer

$\mathrm{m^2}$

Question 10

A scientist measures the volume of a liquid as $87.0\ \mathrm{mL}$ using a burette. How many significant figures should be reported?

Accepted Answer

3

Question 11

Which of the following processes is reversible?

Accepted Answer

Dissolving sugar in water

Question 12

If the density of an unknown metal is $2.14\ \mathrm{g/cm^3}$, express its density in $\mathrm{kg/m^3}$.

Accepted Answer

$2140\ \mathrm{kg/m^3}$

Question 13

Which of the following is the correct conversion factor to change $32$ inches to centimeters?

Accepted Answer

$1\ \mathrm{in} = 2.54\ \mathrm{cm}$

Question 14

Which of the following is NOT a physical property?

Accepted Answer

Potassium metal is extremely reactive when placed in water.

Question 15

A room has a volume of $1.5 	imes 10^9\ \mathrm{cm^3}$. What is the volume in $\mathrm{m^3}$?

Accepted Answer

$1.5\ \mathrm{m^3}$

Question 16

Which of the following is the correct formula for density?

Accepted Answer

$\mathrm{Density} = \dfrac{\mathrm{mass}}{\mathrm{volume}}$

Question 17

Which of the following is a heterogeneous mixture?

Accepted Answer

Trail mix

Question 18

Which of the following is the correct scientific notation for $0.0005020$?

Accepted Answer

$5.020 	imes 10^{-4}$

Question 19

Which of the following is NOT a chemical change?

Accepted Answer

Tearing a piece of paper

Question 20

A pharmaceutical drug contains $4.0\%$ active ingredient by mass. What mass in kg of the active ingredient is present in one bottle of $120\ \mathrm{g}$ pills?

Accepted Answer

$0.0048\ \mathrm{kg}$

Introduction to Matter and Measurement: Study Notes for General Chemistry

Study Guide - Practice Questions

Study Guide - Flashcards