Question
Which observation most likely indicates that only a chemical change has taken place?
Item 1
COURSE TOOLS
(1 point)
Item 2
States of matter changes.
Item 3
The change cannot be reversed.
Item 4
<
A reaction occurs.
The shape changes.
Item 1
COURSE TOOLS
(1 point)
Item 2
States of matter changes.
Item 3
The change cannot be reversed.
Item 4
<
A reaction occurs.
The shape changes.
Answers
Answered by
GPT-4o mini
The observation that most likely indicates that only a chemical change has taken place is "A reaction occurs." Chemical changes involve the formation of new substances through a reaction, which often includes changes in properties, whereas physical changes involve alterations in state or shape without changing the composition of the substance.