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Unit 1 Review Chemistry

Authored by L Harloff

Science

6th Grade

NGSS covered

Unit 1 Review Chemistry
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23 questions

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1.

OPEN ENDED QUESTION

5 mins • 2 pts

Mr. Gordon is sick to his stomach. A friend advises him to take an Alka-Seltzer. Mr. Gordon follows the directions on the package and adds two tablets to a glass of water. As soon as the Alka-Seltzer tables go into the water, the liquid begins to bubble.

a.      Type of change:      Physical     or      Chemical

b.     Evidence:

Evaluate responses using AI:

OFF

Tags

NGSS.MS-PS1-2

2.

OPEN ENDED QUESTION

5 mins • 2 pts

Mr. Gordon is sick to his stomach. A friend advises him to take an Alka-Seltzer. Mr. Gordon follows the directions on the package and adds two tablets to a glass of water. As soon as the Alka-Seltzer tables go into the water, the liquid begins to bubble.

a.      Type of change:      Physical     or      Chemical

b.     Evidence:

Evaluate responses using AI:

OFF

Tags

NGSS.MS-PS1-2

3.

OPEN ENDED QUESTION

5 mins • 2 pts

Darlene adds Bob's Super Plant Vitamins to a container of water in preparation for fertilizing her garden. When the vitamin mixture goes into the water, Darlene notices that the container becomes cold.

a.      Type of change:      Physical     or      Chemical

b.     Evidence:

Evaluate responses using AI:

OFF

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

4.

OPEN ENDED QUESTION

5 mins • 2 pts

Media Image

Green plants use sunlight to perform photosynthesis.

a.      Type of change:        Physical       or       Chemical

b.      Evidence:

Evaluate responses using AI:

OFF

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A student heats dark-gray, pure iron filings in an open test tube exposed to air in a lab. She

observes the formation of a red solid in the test tube. What can she conclude about the red solid?

It is an element because it dissolved when heated

It is a compound because it is a simpler substance of the iron filings that broke down when they were heated.

It is a compound because it is a new substance formed from iron filings and air after the iron filings were heated.

It is an element because it turned red when heated.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

Which of the following most likely describes the reaction in the diagram?

The heat created a chemical reaction between the iron and sulfur, creating a compound of iron sulfide with new chemical properties.

The heat created a physical reaction between the iron and sulfur, creating a mixture with new physical properties.

The heat evaporated the iron and sulfur, creating a precipitate with new chemical properties.       

The heat melted the iron and sulfur, creating a solution with new physical properties.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

What occurred in the diagram?

A physical change, because a solid formed when the two liquids combined

A chemical change, because a yellow substance formed when the two liquids combined

A chemical change, because the volume of the final solution was larger than the initial solutions

A physical change, because the temperature changed with no outside source applied

Tags

NGSS.MS-PS1-2

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