Use the table of observed changes to answer the question.

Question

Change # Reacts with another substance? Temperature change? Gas, sound, or light produced? New substance formed?
1 yes yes yes yes
2 no yes yes no
3 yes yes yes yes
4 no no no no
Which changes shown in the table are physical changes?

(1 point)
Responses

2 and 4
2 and 4

1 and 2
1 and 2

2 and 3
2 and 3

1 and 4

Answer 1

In the table provided, physical changes are characterized by the absence of the formation of new substances and typically do not involve reactions with other substances. Based on the observations:

• Change #1: Reacts with another substance? Yes; New substance formed? Yes (chemical change)
• Change #2: Reacts with another substance? No; New substance formed? No (physical change)
• Change #3: Reacts with another substance? Yes; New substance formed? Yes (chemical change)
• Change #4: Reacts with another substance? No; New substance formed? No (physical change)

Based on this analysis, the changes that are physical changes are Change #2 and Change #4.

Therefore, the correct response is:

2 and 4