Question 1

Which of the following is a correct conversion for 5.0 kilometers to meters using metric prefixes?

Accepted Answer

$5.0 	imes 10^3$ meters

Question 2

Which element is classified as a metalloid according to the periodic table provided?

Accepted Answer

Silicon (Si)

Question 3

A mixture of sand and water is best classified as which type of matter?

Accepted Answer

Heterogeneous mixture

Question 4

Which of the following is a chemical property?

Accepted Answer

Iron rusts when exposed to oxygen

Question 5

Convert 250 milligrams to grams using metric prefixes.

Accepted Answer

$2.5 	imes 10^{-2}$ grams

Question 6

A block has a mass of 200 g and a volume of 50 cm$^3$. What is its density?

Accepted Answer

$4.0$ g/cm$^3$

Question 7

How many significant figures are in the measurement 0.00450?

Accepted Answer

3

Question 8

Express $0.00032$ in scientific notation.

Accepted Answer

$3.2 	imes 10^{-4}$

Question 9

Which change of state is described as liquid to gas?

Accepted Answer

Evaporation

Question 10

According to the law of conservation of mass, what happens to the total mass in a chemical reaction?

Accepted Answer

It remains constant

Question 11

Which statement best describes the law of conservation of energy?

Accepted Answer

Energy cannot be created or destroyed, only transformed

Question 12

What is the percent by mass of sodium chloride in a solution containing 20 g NaCl dissolved in 80 g water?

Accepted Answer

$25\%$

Question 13

Which metric prefix represents $1 	imes 10^{-6}$?

Accepted Answer

micro-

Question 14

If a sample contains 0.0032 liters, how many milliliters does it contain?

Accepted Answer

$320$ mL

Question 15

Which of the following is a physical property?

Accepted Answer

Water freezes at $0^\circ$C

Question 16

Which element is a nonmetal according to the periodic table provided?

Accepted Answer

Oxygen (O)

Question 17

A student measures the mass of a liquid as 45.0 g and its volume as 15.0 mL. What is the density of the liquid?

Accepted Answer

$3.0$ g/mL

Question 18

Which of the following best describes a homogeneous mixture?

Accepted Answer

Salt dissolved in water

Question 19

Convert 2.5 inches to centimeters using the English-Metric equivalents table.

Accepted Answer

$6.35$ cm

Question 20

Which of the following is an example of a compound?

Accepted Answer

Water (H$_2$O)

General Chemistry Study Guide: Chapters 1–3

Study Guide - Practice Questions