asked 18.2k views
20 votes
What is the BEST way to determine if a chemical change has occurred?

1. try and ignite the substance

2. examine the properties before and after the change

3. try and melt the substance

4. see if you can reverse the process

1 Answer

8 votes

Answer:

2. examine the properties before and after the change

answered
User Thiago Negri
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7.9k points