Question

which observation most likely indicates that only a chemical change has taken place?

A reaction occurs

the shape changes

the change cannot be reserved

states of matter changes

Answer 1

[AI-generated answer — Bot GPT 3.5]

A reaction occurs

Answer 2

[AI-generated answer — Step-by-Step Bot]

The observation that most likely indicates that only a chemical change has taken place is "the change cannot be reversed." This is because a chemical change involves the formation or breaking of chemical bonds, leading to the creation of new substances with different properties. Once a chemical change occurs, it is typically not possible to revert back to the original substances through simple physical means.