Chemical Reactions Test, Quiz and Vocabulary

1. The diagram above shows the repeating groups of atoms that make up two samples. Will the properties of the two samples likely be the same or different? (Examples of properties are smell, color, and the temperature at which a substance melts.)

• The properties will likely be different because the repeating groups of atoms that make up each sample are different.

• The properties will likely be different because there are more repeating groups of atoms in Sample 2.

• The properties will likely be the same because the repeating groups of atoms that make up the two samples have the same number of atoms.

• The properties will likely be the same because the repeating groups of atoms that make up the two samples have two of the same types of atoms.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

Something that can be observed about a substance, such as
its color, smell, or boiling point

• property

• scale

• model

• reactant

Tags

NGSS.MS-PS1-2

The relative size of things

• scale

• product

• atoms

• property

Tags

NGSS.MS-ESS1-3

The tiny pieces that all matter—all the stuff in the world—
is made of

• atoms

• substance

• reactant

• property

Tags

NGSS.MS-PS1-1

Something that is made of all the same atoms or
groups of atoms

• substance

• reactant

• scale

• model

Tags

NGSS.MS-PS1-1

An object, diagram, or computer program that helps us understand something by making it simpler or easier to see

• Model

• substance

• atoms

• reactant

Tags

NGSS.MS-ESS2-4

NGSS.MS-LS1-2

NGSS.MS-LS2-3

NGSS.MS-PS1-1

A starting substance that is part of a chemical reaction

• Reactant

• scale

• atoms

• substance

Tags

NGSS.MS-PS1-5

An ending substance that is made during a chemical reaction

• product

• reactant

• property

• model

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

2. Serena mixed two samples together: a gray solid that smells like flowers and a gray solid that smells like bleach. She analyzed the results and found two ending substances. One of the ending substances was a white solid. This ending substance is made up of the repeating group of atoms shown above. Which of the diagrams to the left shows the repeating groups of atoms that make up the samples Serena mixed together?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

3. Tiana is a chemist who is making a chemical to add to swimming pools in order to make the water safer. She mixed two solid substances together in a sealed container. The diagram above shows the repeating groups of atoms that make up the two starting substances. After mixing, Tiana found two liquid substances in the sealed container. (Nothing had escaped.) Which of the diagrams to the left shows the repeating groups of atoms that make up the ending substances?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5