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Question

You have been provided with a series of video clips that demonstrate a type of change that is either chemical or physical. You may watch the video multiple times and take notes to help you. After watching the video, complete the questions that follow to demonstrate your understanding of the change that has occurred.
Reaction 1
Video Player

Question 1
What type of change has taken place?(1 point)
Responses

Physical change
Physical change

Chemical change
Chemical change
Question 2
In 2-3 sentences, in your own words, describe why you chose that type of change in the previous question. Key points you may include in your response:

The definition of physical/chemical change
The start/end products in a physical/chemical change
The start/end appearance in a physical/chemical change
The particular evidence observed to indicate a physical/chemical change.
(3 points)
0 / 100 Word Limit
Reaction 2
Video Player

Question 3
What type of change has taken place?(1 point)
Responses

Physical change
Physical change

Chemical change
Chemical change
Question 4
In 2-3 sentences, in your own words, describe why you chose that type of change in the previous question. Key points you may include in your response:

The definition of physical/chemical change
The start/end products in a physical/chemical change
The start/end appearance in a physical/chemical change
The particular evidence observed to indicate a physical/chemical change.
(3 points)
0 / 100 Word Limit
Reaction 3
Video Player

Question 5
What type of change has taken place?(1 point)
Responses

Physical change
Physical change

Chemical change
Chemical change
Question 6
In 2-3 sentences, in your own words, describe why you chose that type of change in the previous question. Key points you may include in your response:

The definition of physical/chemical change
The start/end products in a physical/chemical change
The start/end appearance in a physical/chemical change
The particular evidence observed to indicate a physical/chemical change.
(3 points)
0 / 100 Word Limit
Reaction 4
Video Player

Question 7
What type of change has taken place?(1 point)
Responses

Physical change
Physical change

Chemical change
Chemical change
Question 8
In 2-3 sentences, in your own words, describe why you chose that type of change in the previous question. Key points you may include in your response:

The definition of physical/chemical change
The start/end products in a physical/chemical change
The start/end appearance in a physical/chemical change
The particular evidence observed to indicate a physical/chemical change.
(3 points)
0 / 100 Word Limit
Reaction 5
Video Player

Question 9
What type of change has taken place?(1 point)
Responses

Physical change
Physical change

Chemical change
Chemical change
Question 10
In 2-3 sentences, in your own words, describe why you chose that type of change in the previous question. Key points you may include in your response:

The definition of physical/chemical change
The start/end products in a physical/chemical change
The start/end appearance in a physical/chemical change
The particular evidence observed to indicate a physical/chemical change.
(3 points)
0 / 100 Word Limit
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Answer 1

Based on the instructions provided, I'll format responses as if the reactions were observed, but without specifics. You may replace the placeholders with appropriate observations after you review the videos.

Reaction 1

Question 1
What type of change has taken place?

• Response: Chemical change

Question 2
In 2-3 sentences, describe why you chose that type of change.
I chose chemical change because a chemical change involves a reaction that alters the substance's composition and produces new materials. For example, if I observed a color change, gas production, or the formation of a precipitate, these would indicate a chemical reaction has occurred, reflecting a difference in appearance from the reactants to the products.

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Reaction 2

Question 3
What type of change has taken place?

• Response: Physical change

Question 4
In 2-3 sentences, describe why you chose that type of change.
I determined it was a physical change because the substances involved did not alter their chemical structure, but only their physical form. For instance, if there was a change in state or shape without producing new substances, it reflects a physical change, evidenced by no new materials being formed throughout the process.

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Reaction 3

Question 5
What type of change has taken place?

• Response: Chemical change

Question 6
In 2-3 sentences, describe why you chose that type of change.
I identified this as a chemical change since the process involved the transformation of original substances into new products. Characteristics such as heat production, color change, or the release of gas indicated that new chemical substances were formed, marking a clear difference from the starting materials.

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Reaction 4

Question 7
What type of change has taken place?

• Response: Physical change

Question 8
In 2-3 sentences, describe why you chose that type of change.
I chose physical change because the materials involved retained their original characteristics despite changes in form or state. If the reaction showed no evidence of new substances forming—like a solid dissolving in a liquid—it suggests a physical change was taking place.

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Reaction 5

Question 9
What type of change has taken place?

• Response: Chemical change

Question 10
In 2-3 sentences, describe why you chose that type of change.
I classified this as a chemical change because there were observable signs of a reaction, such as color change or temperature increase. This change not only affected the appearance but also indicated that a new substance was formed, highlighting the transition from reactants to products that is characteristic of chemical changes.

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Feel free to edit and adjust the descriptions according to your observations from the video clips!