Which is not a clue that could indicate a chemical change? A Change in colorB Change in shape CChange in energy DChange in odor

Break Down the Problem

1. Identify the indicators of a chemical change.
2. Analyze each option to determine which one does not correlate with chemical changes.

Relevant Concepts

• Chemical Changes: Typically involve alterations in molecular structure and can be indicated by:
  • Change in color
  • Change in energy (e.g., heat produced or absorbed)
  • Change in odor

Analysis and Detail

1. Change in Color (A): Often indicates a chemical change, e.g., rusting iron.
2. Change in Shape (B): This suggests a physical change, such as cutting or molding, rather than a chemical change.
3. Change in Energy (C): Associated with chemical changes, such as exothermic or endothermic reactions.
4. Change in Odor (D): Frequently related to a chemical change, as new substances with different odors are produced.

Verify and Summarize

Through analysis:

• Options A, C, and D are valid indicators of chemical changes.
• Option B, "Change in shape," is not an indicator of a chemical change.

Final Answer

B Change in shape is not a clue that could indicate a chemical change.