Question 1

Which of the following best describes the study of chemistry?

Accepted Answer

The study of the composition, properties, and interactions of matter.

Question 2

Which statement correctly distinguishes between an element and a compound?

Accepted Answer

An element contains only one type of atom and cannot be decomposed into simpler substances, while a compound contains two or more elements chemically joined and can be decomposed.

Question 3

Which of the following is a physical change?

Accepted Answer

Melting of ice into liquid water.

Question 4

A homogeneous mixture is also known as a:

Accepted Answer

Solution

Question 5

Which molecule shown below contains the most carbon atoms?

Accepted Answer

Aspirin

Question 6

Which of the following is NOT a property that can be used to separate mixtures?

Accepted Answer

Chemical reactivity

Question 7

Which of the following is a chemical property?

Accepted Answer

Flammability

Question 8

Which of the following statements about states of matter is correct?

Accepted Answer

Gases have neither a definite shape nor a definite volume.

Question 9

Which separation technique would be most appropriate for separating a solid from a liquid in a heterogeneous mixture?

Accepted Answer

Filtration

Question 10

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

Accepted Answer

A glass of water with pieces of copper

Question 11

Which of the following is a correct statement about molecules?

Accepted Answer

All compounds are molecules, but not all molecules are compounds.

Question 12

Which property is independent of the amount of substance present?

Accepted Answer

Density

Question 13

Which of the following is a correct example of a chemical change?

Accepted Answer

Combustion of gasoline in a car engine

Question 14

Which of the following is the correct SI base unit for mass?

Accepted Answer

Kilogram (kg)

Question 15

Which of the following statements about significant figures is true?

Accepted Answer

Zeros at the end of a number with a decimal point are significant.

Question 16

A sample of gold has a mass of 38.6 g and a volume of 2.00 cm$^3$. What is its density?

Accepted Answer

$19.3\ g/cm^3$

Question 17

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

Accepted Answer

$1\ in = 2.54\ cm$

Question 18

Which of the following is a correct statement about energy in chemistry?

Accepted Answer

Kinetic energy is the energy of motion.

Question 19

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

Accepted Answer

$K = ^\circ C + 273.15$

Question 20

A student measures the mass of a sample three times and gets values of 12.3 g, 12.4 g, and 12.2 g. The true mass is 15.0 g. Which statement best describes the measurements?

Accepted Answer

The measurements are precise but not accurate.

Chapter 1: Matter, Energy, and Measurement – General Chemistry Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards