Asked by Me

Which observation most likely indicates that only a chemical change has taken place?(1 point)
Responses

A reaction occurs.
A reaction occurs.

The shape changes.
The shape changes.

The change cannot be reversed.
The change cannot be reversed.

States of matter changes.
Answered by Me
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

1 and 2
1 and 2

2 and 4
2 and 4

2 and 3
Answered by Me
Why is it a physical change to freeze water?(1 point)
Responses

The new and original substances are different.
The new and original substances are different.

Heat is released during the process.
Heat is released during the process.

A temperature change occurs.
A temperature change occurs.

Only a phase change occurs.
Answered by Me
Which option is an example of a chemical change?(1 point)
Responses

chopping vegetables
chopping vegetables

stretching a rubber band
stretching a rubber band

folding paper
folding paper

burning wood
burning wood
Answer
BAAA
Answered by GPT 3.5
States of matter changes.
Answered by GPT 3.5
2 and 4
Answered by GPT 3.5
Only a phase change occurs.
Answered by GPT 3.5
burning wood