$$250 \ \mathrm{mg} \times \frac{1 \ \mathrm{g}}{1000 \ \mathrm{mg}}$$

Question 1

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

Accepted Answer

Burning wood in a campfire

Question 2

Which property is classified as extensive?

Accepted Answer

Mass

Question 3

A student measures the length of a table as 1.50 meters. How many centimeters is this?

Accepted Answer

$$1.50 	imes 10^2$ cm

Question 4

Which of the following phase changes is irreversible under normal laboratory conditions?

Accepted Answer

Burning gasoline

Question 5

Which SI base unit is used to measure electric current?

Accepted Answer

Ampere

Question 6

A sample of ethanol has a mass of 46.0 g and a volume of 58.0 mL. What is its density?

Accepted Answer

$$0.793 \ \mathrm{g/mL}$$

Question 7

Which of the following is a physical property?

Accepted Answer

Boiling point

Question 8

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

Accepted Answer

Micro-

Question 9

A student records a temperature of 25°C. What is this temperature in Kelvin?

Accepted Answer

$$298 \ \mathrm{K}$$

Question 10

Which of the following statements about significant figures is correct?

Accepted Answer

Zeros at the end of a number and to the left of a decimal are always significant.

Question 11

Which conversion factor would you use to convert 5.0 kilometers to meters?

Accepted Answer

$$1 \ \mathrm{km} = 1000 \ \mathrm{m}$$

Question 12

Which of the following is an intensive property?

Accepted Answer

Density

Question 13

A student wants to convert 250 milligrams to grams. Which equation should they use?

Accepted Answer

$$250 \ \mathrm{mg} 	imes \frac{1 \ \mathrm{g}}{1000 \ \mathrm{mg}}$$

Question 14

Which of the following is NOT a base SI unit?

Accepted Answer

Liter

Question 15

Which process is a reversible phase change?

Accepted Answer

Melting ice

Question 16

A block has a mass of 200 g and a volume of 50 cm³. What is its density?

Accepted Answer

$$4.0 \ \mathrm{g/cm^3$}$$

Question 17

Which of the following is a chemical property?

Accepted Answer

Reactivity with acid

Question 18

Which metric prefix represents $$10^3$$?

Accepted Answer

Kilo-

Question 19

Which of the following is the correct scientific notation for 0.00056?

Accepted Answer

$$5.6 	imes 10$$^{-4}$$

Question 20

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

Accepted Answer

$$K = ^\circ C + 273$$

Introduction to General Chemistry: Matter, Properties, and Measurement

Study Guide - Practice Questions