Question

How can you say Boling and melting are physical change and not chemical change?​

Answer 1

Answer:

Solution

Physical: boiling and melting are physical changes. ...

Chemical: The dark grey nail changes color to form an orange flaky substance (the rust); this must be a chemical change. ...

Physical: because none of the properties changed, this is a physical change.

Explanation:

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Answer 2

Answer:

They are also physical changes because they do not change the nature of the substance. Boiling waterBoiling water is an example of a physical change and not a chemical change because the water vapor still has the same molecular structure as liquid water (H2O).