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

1 and 2
1 and 2

2 and 3
2 and 3

2 and 4
2 and 4

1 and 4

Answer 1

Physical changes are changes that do not involve a change in the chemical composition of the substance. In the table provided:

• Change #1: Reacts with another substance? Yes (not a physical change)
• Change #2: Reacts with another substance? No (likely a physical change)
• Change #3: Reacts with another substance? Yes (not a physical change)
• Change #4: Reacts with another substance? No (likely a physical change)

From this analysis, the changes that are likely physical are Change #2 and Change #4.

Therefore, the correct response is:

2 and 4