The visual cues that changes occurred in the chemical reaction are:
- Color changes
- Precipitation
- Bubbling
- Presence of residue etc.
What is a chemical reaction?
When two or more compounds mix to create a new substance, a chemical change or reaction takes place.
Sometimes, there are no visual cues or evidence that a reaction has taken place. However the above listed indicators are strong evidence that there has been a chemical reaction.
Learn more about chemical reaction:
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