AM023005 Is air matter? Why or why not? A. Yes, because air is not alive. B. Yes, because air is made up of atoms. C. No, because air cannot be seen. D. No, because air does not take up space.

AM059002 Which statement about matter is TRUE? A. Atoms are not matter but they are contained in matter. B. Matter exists only when you can see it. C. Living things are not matter. D. Matter is made up of atoms.

SC044004 A student has a ball of wax. The wax is a pure substance. The student removes a small piece of wax from the ball. Which of the following statements is TRUE about what happens to the mass and melting point of the ball of wax after the piece is removed? A. Both the mass and melting point of the ball of wax change. B. Both the mass and melting point of the ball of wax stay the same. C. The mass of the ball of wax changes, and its melting point stays the same. D. The melting point of the ball of wax changes, and its mass stays the same.

SC057007 A student makes some observations about three solids and summarizes the results in the table below.

Solid 1 Solid 2 Solid 3

Mass 3.0 g 3.0 g 9.8 g

Melting Point 776°C 445°C 445°C

Color white white white

Which of the solids could be the same substance? A. Solids 1 and 2 could be the same substance. B. Solids 2 and 3 could be the same substance. C. All of the solids could be the same substance. D. None of the solids could be the same substance. (Modified from IQWST)

SC057008 A student makes some observations about three solids and summarizes the results in the table below.

Solid 1 Solid 2 Solid 3

Mass 3.0 g 3.0 g 9.8 g

Melting Point 776°C 445°C 445°C

Color white white white

Could any of the solids be the same substance and why? A. Solids 1 and 2 could be the same substance. Even though they do not have the same melting point, they have the same mass. B. Solids 2 and 3 could be the same substance. Even though they do not have the same mass, they have the same melting point and color. C. Solids 1, 2, and 3 could all be the same substance. Even though they do not all have the same mass and melting point, they have the same color. D. Solids 1, 2, and 3 cannot be the same substance because they have different combinations of color, melting point, and mass.

SC061004 A student has two containers. Each container has a clear liquid inside of it. The liquids are pure substances. What can the student do to help find out whether these two liquids are the same or different substances? A. Smell each liquid and compare the odors. B. Weigh each liquid and compare the weights. C. Measure the volume of each liquid and compare the volumes. D. Measure the temperature of each liquid and compare the temperatures.

SC063004 Your teacher gives you a container with a clear liquid in it. The liquid is a pure substance. What could you do to help identify the liquid in the container? A. Weigh the liquid and compare it to the weight of other liquids. B. Measure the volume of the liquid and compare it to the volumes of other liquids. C. Measure the temperature of the liquid and compare it to the temperature of other liquids. D. Determine the boiling point of the liquid and compare it to the boiling points of other liquids.

SC064007 A student determines the volume, density, and boiling point of three colorless liquids and lists them in the table below.

Liquid 1 Liquid 2 Liquid 3

Volume (mL) 10 50 10

Density (g/mL) 0.79 0.79 1.0

Boiling Point (°C) 56 78 100

Color colorless colorless colorless

Could any of the liquids be the same substance? A. Liquids 1 and 2 could be the same substance. B. Liquids 1 and 3 could be the same substance. C. All of the liquids could be the same substance. D. None of the liquids could be the same substance.

SC064008 A student determines the volume, density, and boiling point of three colorless liquids and lists them in the table below.

Liquid 1 Liquid 2 Liquid 3

Volume (mL) 10 50 10

Density (g/mL) 0.79 0.79 1.0

Boiling Point (°C) 56 78 100

Color colorless colorless colorless

Could any of the liquids be made of the same substance and why? A. Liquids 1 and 2 could be the same substance because they have the same density. B. Liquids 1 and 3 could be the same substance because they have the same volume. C. Liquids 1, 2, and 3 could be the same substance because they are all clear liquids. D. None of the liquids could be the same substance because they have different combinations of density, boiling point, and color.

SC095002 You find an object that is made of a pure metal. What could you do to identify which metal the object is made of? A. Determine its melting point and compare it to the melting point of other metals. B. Measure its length and compare it to the length of other metals. C. Determine its shape and compare it to the shape of other metals. D. Measure its mass and compare it to the mass of other metals.

SC095003 You find an object that is made of a pure metal. What could you do to identify which metal the object is made of? A. Determine its density and compare it to the density of other metals. B. Measure its length and compare it to the length of other metals. C. Determine its shape and compare it to the shape of other metals. D. Measure its mass and compare it to the mass of other metals.

SC096003 You have two balloons. Balloon 1 is filled with a gas, and Balloon 2 is filled with a gas. The gases are pure substances. What could you do to help decide if the gases in the balloons are the same substance? A. Compare the temperature of the gas in Balloon 1 to the temperature of the gas in Balloon 2. B. Compare the volume of the gas in Balloon 1 to the volume of the gas in Balloon 2. C. Compare the weight of the gas in Balloon 1 to the weight of the gas in Balloon 2. D. Compare the odor of the gas in Balloon 1 to the odor of the gas in Balloon 2.

SC099002 You find a container filled with a liquid. The liquid is a pure substance. Which of the following will NOT help you identify the liquid? A. Determining the freezing point of the liquid and comparing its freezing point to the freezing point of other liquids B. Determining the mass of the liquid and comparing its mass to the mass of other liquids C. Observing the color of the liquid and comparing its color to the color of other liquids D. Smelling the liquid and comparing its odor to the odor of other liquids

SC100003 Using the information about the five liquids in the table below, which of the following liquids could be the same substance?

Liquid 1 Liquid 2 Liquid 3 Liquid 4 Liquid 5 A. Liquids 1 and 2 B. Liquids 1 and 3 C. Liquids 1 and 4 D. Liquids 1 and 5

Volume (mL) 25 50 25 25 25

Flammable no no yes no no

Boiling Point (°C) 100 100 100 78 100

Color colorless colorless colorless colorless yellow

SC100004 Using the information about the four liquids in the table below, which of the following liquids could be the same substance?

Liquid 1 Liquid 2 Liquid 3 Liquid 4

Volume (mL) 25 50 25 25

A. Liquids 1 and 2 B. Liquids 1 and 3 C. Liquids 1 and 4 D. None of the liquids could be the same substance.

Boiling Point (°C) 100 100 78 100

Color colorless colorless colorless yellow

Answer key for the selected items Item ID Number Correct Answer AM 023005

B

AM 059002

D

SC044004

C

SC057007

B

SC057008

B

SC061004

A

SC063004

D

SC064007

D

SC064008

D

SC095002

A

SC095003

A

SC096003

D

SC099002

B

SC100003

A

SC100004

A

Copyright 2011 American Association for the Advancement of Science