$$25.0 \times \frac{1\,\text{m}}{100\,\text{cm}}$$

Question 1

Which of the following best describes a compound?

Accepted Answer

A substance composed of more than one element, bound in fixed ratios, and can be decomposed to simpler substances.

Question 2

Which property can be measured without changing the identity of a substance?

Accepted Answer

Boiling point

Question 3

A sample of air is analyzed and found to have uniform composition throughout. Which classification best describes this sample?

Accepted Answer

Homogeneous mixture

Question 4

Which of the following is an example of an extensive property?

Accepted Answer

Mass

Question 5

Which statement about solids is correct?

Accepted Answer

Solids have a defined shape and defined volume.

Question 6

Which of the following is a chemical property?

Accepted Answer

Flammability

Question 7

A student mixes sand and salt in a beaker. Which type of matter is formed?

Accepted Answer

Heterogeneous mixture

Question 8

Which of the following best describes potential energy?

Accepted Answer

Energy that is stored

Question 9

Which equation would you use to convert 25.0 cm to meters using dimensional analysis?

Accepted Answer

$$25.0 	imes \frac{1\,	ext{m}}{100\,	ext{cm}}$$

Question 10

Which of the following is NOT a pure substance?

Accepted Answer

Air

Question 11

Which process involves a physical change?

Accepted Answer

Melting of ice

Question 12

Which of the following statements about gases is correct?

Accepted Answer

Gases have an undefined shape and undefined volume.

Question 13

Which of the following is an intensive property?

Accepted Answer

Density

Question 14

Which of the following best describes a homogeneous mixture?

Accepted Answer

A mixture that is uniform in appearance and has the same properties throughout.

Question 15

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

Accepted Answer

Burning wood

Question 16

Which statement about elements is correct?

Accepted Answer

Elements are made of only one type of atom and cannot be decomposed to simpler substances.

Question 17

Which of the following best describes kinetic energy?

Accepted Answer

Energy of motion

Question 18

Which of the following is a heterogeneous mixture?

Accepted Answer

Salad

Question 19

Which of the following is true about exothermic reactions?

Accepted Answer

Heat is emitted as the kinetic energy of the particles in a substance proceeds in a reaction.

Question 20

Which of the following is the fundamental unit of matter?

Accepted Answer

Atom

General Chemistry I: Introduction to Matter, Classification, and Properties

Study Guide - Practice Questions