Elements Matter

Interactions of Matter

by Cecily Vaulx

Multiple Choice

All matter is made of atoms. Which drawing shows the correct relationships between the three basic parts of an atom?

Multiple Choice

A student studies four chemicals in a laboratory investigation.

Which chemical cannot be further broken down into other chemicals using ordinary laboratory processes?

• 1

• 2

• 3

• 4

Multiple Choice

Tyler is going hiking. He packs some homemade snacks to take with him. He puts raisins, nuts, chocolate pieces, and dried fruit in a bag. What is the best description of this homemade snack?

• A mixture

• A Solution

• An Element

• A Substance

Multiple Choice

A student conducted an experiment with a chamber filled with nitrogen gas. During the experiment, a change in motion of the atoms of the nitrogen occurs as shown in the figure below.

What action by the student could have caused this change in atomic motion?

• She spun the chamber in a centrifuge.

• She placed the chamber in an ice bath.

• She heated the chamber with a Bunsen burner.

• She added more nitrogen gas into the chamber. 

Multiple Choice

When chemical W is added to a liquid, the chemical breaks down into substances X, Y, and Z. It is not possible to break down substances X, Y, and Z into simpler substances. What conclusion is supported by this evidence?

• Chemical W is an element.

• Chemical W is a pure substance.

• Substances X, Y, and Z are elements.

• Substances X, Y, and Z are compounds.

Multiple Choice

How does the particle arrangement of water change when heated from 46°C to 102°C?

Multiple Choice

A self-warming packet can be used to warm hands during cold weather. Powdered iron (Fe) reacts with oxygen (O₂) when the packet is exposed to air. With the addition of a salt catalyst, Fe₂O₃ (iron oxide) is quickly formed and heat is given off.

Which term best describes iron oxide?

• Compound

• Element

• Ion

• Mixture

Multiple Choice

A group of students are given three different-colored circles to make an atomic model of a carbon atom. The chart shows the colored circle that represents each particle in the atom.

Which diagram represents the correct atomic model for a carbon atom?

Multiple Choice

A student finds a beaker containing a substance in the laboratory. The student filters the contents of the beaker and notices that a solid is left on the filter paper.

What can the student conclude about the type of matter of the original material?

• The original material was a mixture.

• The original material was a compound.

• The original material was either an element or a compound.

• The original material was either a mixture or a compound.

Multiple Choice

The image shows two different atomic models made by two students.

What can be concluded about the models?

• Both models are accurate because they show protons and electrons inside the nucleus. 

• Model 1 is accurate because the numbers of protons and electrons inside the atom are the same.

• Both models are accurate because they contain positively charged protons and negatively charged electrons.

• Model 2 is accurate because it shows protons and neutrons at the center of the atom and electrons in orbits around the center.

Multiple Choice

During an experiment, a researcher applies pressure on a gas in a closed container using a movable piston, as shown.

Which model can be used to describe the particle arrangement of the gas before and after the pressure is applied if there is no phase change?

Multiple Choice

The chart shows a list of formulas.

Which substances are compounds?

• 1, 2, 3, and 4

• 1, 2, 3, and 5

• 2, 4, 5, and 6

• 2, 3, 4, and 6

Multiple Choice

Two elements (A and B) are combined in two different ways to form two different substances, X and Y. The resulting substances have the characteristics shown in the table.

What can be concluded from the table?

• Substance X is a mixture, and Substance Y is a compound.

• Substance X is a compound, and Substance Y is a mixture.

• Substances X and Y are compounds.     

• Substances X and Y are mixtures.

Multiple Choice

The atomic arrangements of two substances (A and B) are shown in the diagram. 

Which statement describes one of the substances correctly ?

• Substance A is an element as atoms are not combined chemically.

• Substance A is a compound as two different types of atoms are present.

• Substance B is a mixture as the atoms can be separated by any physical process.

• Substance B is a compound as the atoms can be separated only by chemical processes.

Multiple Choice

If the solar system were used as a model of an atom, what would the Sun most likely represent?

• an ion

• a nucleus

• a neutron 

• an electron