Which of these indicates a chemical change?
Understand the Problem
The question is asking us to identify which of the given options represents a chemical change. A chemical change involves the formation of new substances through a chemical reaction, indicated by changes in chemical properties. We need to assess each option to see if a new substance is formed.
Answer
Indicators of a chemical change include color change, temperature change, light, bubbles, and precipitate formation.
Color change, temperature change, light being given off, formation of bubbles, and formation of precipitate all indicate a chemical change.
Answer for screen readers
Color change, temperature change, light being given off, formation of bubbles, and formation of precipitate all indicate a chemical change.
More Information
A chemical change involves the breaking or forming of chemical bonds, resulting in a new substance.
Tips
Mistaking a phase change (like water boiling) for a chemical change. Phase changes are physical, not chemical.
Sources
- Changes in Matter: Physical vs. Chemical Changes - education.nationalgeographic.org
- 3.06: Changes in Matter - Physical and Chemical Changes - chem.libretexts.org
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