$$\mathrm{Mass} = \mathrm{Density} \times \mathrm{Volume}$$

Question 1

Which of the following best describes an extensive property of matter?

Accepted Answer

Mass

Question 2

A student measures the temperature of a liquid in a beaker and records $$25\ ^\circ \mathrm{C}. $$Which type of property is temperature?

Accepted Answer

Intensive property

Question 3

Which of the following is a chemical change?

Accepted Answer

Burning wood

Question 4

Which statement correctly distinguishes between a physical and a chemical property?

Accepted Answer

A physical property can be measured without changing the substance's chemical identity.

Question 5

Which of the following is NOT an example of an intensive property?

Accepted Answer

Volume

Question 6

A sample of water is divided into two equal parts. Which property will remain unchanged in both samples?

Accepted Answer

Density

Question 7

Which of the following changes is classified as a physical change?

Accepted Answer

Evaporation of water

Question 8

Which property would be most useful in identifying an unknown substance?

Accepted Answer

Density

Question 9

A student observes that a substance changes color when exposed to air. This observation is most likely related to which type of property?

Accepted Answer

Chemical property

Question 10

Which of the following best describes the difference between intensive and extensive properties?

Accepted Answer

Extensive properties depend on the amount of substance present, while intensive properties do not.

Question 11

Which of the following is a physical property that can be used to distinguish between gold and pyrite (fool's gold)?

Accepted Answer

Density

Question 12

A chemical reaction occurs in a closed container. Which property of the system remains constant?

Accepted Answer

Mass

Question 13

Which of the following is an example of a physical property that is also an intensive property?

Accepted Answer

Melting point

Question 14

A student mixes two clear solutions and observes the formation of a precipitate. What type of change has occurred?

Accepted Answer

Chemical change

Question 15

Which of the following equations correctly relates mass, volume, and density?

Accepted Answer

$$\mathrm{Mass} = \mathrm{Density} 	imes \mathrm{Volume}$$

Question 16

Which property is most likely to change when a sample of copper is cut in half?

Accepted Answer

Mass

Question 17

Which of the following is a chemical property of hydrogen gas?

Accepted Answer

Flammability

Question 18

A student heats a sample of ammonium chloride and observes the formation of ammonia and hydrogen chloride gases. What type of change has occurred?

Accepted Answer

Chemical change

Question 19

Which of the following is NOT a chemical property?

Accepted Answer

Boiling point

Question 20

A student wants to determine whether a sample is pure water or salt water. Which property should they measure?

Accepted Answer

Density

General Chemistry: Learning Objectives and Assessment Overview

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