Chemical Reactions Critical Juncture 7

Chemical Reactions Critical Juncture 7

7th Grade

14 Qs

quiz-placeholder

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Chemical Reactions Critical Juncture 7

Chemical Reactions Critical Juncture 7

Assessment

Quiz

Science

7th Grade

Practice Problem

Hard

NGSS
MS-PS1-1, MS-PS1-2, MS-PS1-5

Standards-aligned

Created by

Troy Henry

Used 230+ times

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14 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

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 there are more repeating groups of atoms in Sample 2.

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

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

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.

Tags

NGSS.MS-PS1-1

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

A scientist mixed two samples together: a colorless liquid that melts at 12°C and a yellow solid that melts at 390°C. She analyzed the results and found two ending substances. One of the ending substances was a gray 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 the scientist mixed together?

Media Image
Media Image
Media Image
Media Image

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

 A  company that makes frying pans needs to create a new substance to coat the pans. The substance must have a high melting point. To create this new substance, workers mixed together two substances that melt at low temperatures in a sealed container. The diagram above shows the repeating groups of atoms that make up the two starting substances. After mixing, the workers found two substances that melt at higher temperatures 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?

Media Image
Media Image
Media Image
Media Image

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

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

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

The other properties will likely be the same because both samples are gases at room temperature.

The other properties will likely be different because there are more repeating groups of atoms in Sample 1.

The other properties will likely be different because the repeating groups of atoms that make up the two samples have different numbers of atoms.

Tags

NGSS.MS-PS1-1

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

A scientist mixed two samples together: a white solid that boils at about 800°C and a colorless gas that boils at about 70°C. He analyzed the results and found two ending substances. One of the ending substances boils at 245°C. 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 the scientist mixed together?

Media Image
Media Image
Media Image
Media Image

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

 Andres is a chemist working at a company that makes ink. To make a new kind of ink, Andres mixed two liquid substances together in a sealed container. The diagram above shows the repeating groups of atoms that make up the two starting substances. After mixing, Andres found two solid 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?

Media Image
Media Image
Media Image
Media Image

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

The diagram above shows the repeating groups of atoms that make up two samples. Both samples are solids at room temperature. Will the other 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 other properties will likely be different because there are more repeating groups of atoms in Sample 2.

The other properties will likely be different because the repeating groups of atoms that make up the two samples have different numbers of atoms. 

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

The other properties will likely be the same because both samples are solids at room temperature.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

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