What are the indicators of a chemical change?
Understand the Problem
The question is asking about the signs or indicators that denote a chemical change has occurred. This involves understanding the characteristics that differentiate chemical changes from physical changes.
Answer
odor, temperature change, precipitate formation, production of gas bubbles, and a color change
The indicators of a chemical change are odor, temperature change, precipitate formation, production of gas bubbles, and a color change.
Answer for screen readers
The indicators of a chemical change are odor, temperature change, precipitate formation, production of gas bubbles, and a color change.
More Information
Chemical changes are often evidenced by multiple signs occurring simultaneously. These indicators highlight the re-arrangement of atoms and changes in the energy within the system.
Tips
A common mistake is confusing physical changes with chemical changes. Not all visible changes, such as changes in state or shape, indicate a chemical reaction.
Sources
- Chemical Change vs. Physical Change - Chemistry LibreTexts - chem.libretexts.org
- BBC Bitesize - Indicators of a chemical reaction - bbc.co.uk
- What are indicators of a chemical change? - Quora - quora.com
