Question 1

Which of the following best describes a heterogeneous mixture?

Accepted Answer

A mixture in which the composition is not uniform throughout.

Question 2

Which law states that mass is neither created nor destroyed in a chemical reaction?

Accepted Answer

Law of Conservation of Mass

Question 3

A scientist measures the temperature of a solution as 25°C. What is this temperature in Kelvin?

Accepted Answer

$298 \, \mathrm{K}$

Question 4

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

Accepted Answer

Melting of ice

Question 5

A sample of ethanol has a mass of $46.0 \, \mathrm{g}$ and a volume of $58.0 \, \mathrm{mL}$. What is its density?

Accepted Answer

$0.79 \, \mathrm{g/mL}$

Question 6

Which of the following is NOT a fundamental SI unit?

Accepted Answer

Liter

Question 7

Which of the following statements about energy is correct?

Accepted Answer

Energy can be converted from one form to another.

Question 8

A student records the mass of a coin as $2.50 \, \mathrm{g}$ and its volume as $0.50 \, \mathrm{cm}^3$. What is the density of the coin?

Accepted Answer

$5.00 \, \mathrm{g/cm}^3$

Question 9

Which of the following is a chemical property?

Accepted Answer

Flammability

Question 10

A hospital stores oxygen gas at $21.0^	ext{o} \mathrm{C}$. What is this temperature in Fahrenheit?

Accepted Answer

$69.8^	ext{o} \mathrm{F}$

Question 11

Which of the following best describes a pure substance?

Accepted Answer

A material with a fixed composition and distinct properties.

Question 12

Which of the following is the correct formula for density?

Accepted Answer

$d = \dfrac{m}{V}$

Question 13

A sample of water is heated from $20.0^	ext{o} \mathrm{C}$ to $80.0^	ext{o} \mathrm{C}$. What is the change in temperature in Kelvin?

Accepted Answer

$60.0 \, \mathrm{K}$

Question 14

Which of the following is an example of a homogeneous mixture?

Accepted Answer

Salt dissolved in water

Question 15

Which of the following is NOT a physical property?

Accepted Answer

Reactivity with acid

Question 16

A nurse needs to prepare $250.0 \, \mathrm{mL}$ of a saline solution. If the density of the solution is $1.05 \, \mathrm{g/mL}$, what is the mass of the solution?

Accepted Answer

$262.5 \, \mathrm{g}$

Question 17

Which of the following statements about significant figures is correct?

Accepted Answer

Zeros between nonzero digits are significant.

Question 18

A chemist mixes $50.0 \, \mathrm{g}$ of sugar with $150.0 \, \mathrm{g}$ of water. What is the total mass of the mixture after dissolving?

Accepted Answer

$200.0 \, \mathrm{g}$

Question 19

Which of the following is the correct conversion factor to change centimeters to meters?

Accepted Answer

$1 \, \mathrm{cm} = 0.01 \, \mathrm{m}$

Question 20

A student measures the mass of a beaker three times and gets $50.1 \, \mathrm{g}$, $50.2 \, \mathrm{g}$, and $50.0 \, \mathrm{g}$. The actual mass is $49.8 \, \mathrm{g}$. Which statement best describes the measurements?

Accepted Answer

The measurements are precise but not accurate.

Chapter 1: Matter, Measurement, and Problem Solving – Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards