Ask a New Question
Menu

Which changes shown in the table are physical changes?

(1 point)
Responses

1 and 4
1 and 4

2 and 4
2 and 4

2 and 3
2 and 3

1 and 2

3 answers

To determine which changes are physical changes, we need to look at the nature of the changes shown in the table you mentioned.

Physical changes are alterations that do not change the chemical composition of a substance—like changes in state (solid, liquid, gas), size, shape, or appearance. Examples include melting ice into water or breaking a glass bottle.

Without the specific details of changes 1, 2, 3, and 4 from the table, I cannot definitively identify which pairs are physical changes based solely on the responses provided.

Please provide the details of the changes so I can assist you more accurately!

Use the table of observed changes to answer the 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 4
1 and 4

2 and 4
2 and 4

2 and 3
2 and 3

1 and 2

To identify which changes are physical changes based on the observations in the table, we can analyze each change:

  1. Change #1: Reacts with another substance? Yes; Temperature change? Yes; Gas, sound, or light produced? Yes; New substance formed? Yes

    • This is a chemical change.

  2. Change #2: Reacts with another substance? No; Temperature change? Yes; Gas, sound, or light produced? Yes; New substance formed? No

    • Although there is a temperature change and gas is produced, no new substance is formed. This can indicate a physical change, although further context is needed to be sure (e.g., physical state change).

  3. Change #3: Reacts with another substance? Yes; Temperature change? Yes; Gas, sound, or light produced? Yes; New substance formed? Yes

    • This is a chemical change.

  4. Change #4: Reacts with another substance? No; Temperature change? No; Gas, sound, or light produced? No; New substance formed? No

    • This likely indicates a physical change since there is no reaction or new substance.

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

Therefore, the correct response is: 2 and 4.