Which of the following is always an indication of a chemical change? A. A new substance is produced. B. One substance dissolves into another substance. C. The total mass of materia... Which of the following is always an indication of a chemical change? A. A new substance is produced. B. One substance dissolves into another substance. C. The total mass of material changes. D. A solid turns into a liquid.
Understand the Problem
The question is asking which option consistently signifies a chemical change, implying a need to identify a key characteristic of such changes.
Answer
A new substance is produced.
The final answer is A new substance is produced.
Answer for screen readers
The final answer is A new substance is produced.
More Information
A chemical change implies the rearrangement of atoms resulting in new substances with different properties from the original substances. This distinguishing feature of producing new substances differentiates chemical changes from physical changes, where no new substances emerge.
Tips
A common mistake is confusing chemical changes with physical changes, such as changes in state (e.g., melting) or dissolving, which do not involve the formation of new substances.
Sources
- Which of the following is always an indication of a chemical change... - gauthmath.com
- Lesson 6.1: What is a Chemical Reaction? - acs.org
- Chemical Change vs. Physical Change - Chemistry LibreTexts - chem.libretexts.org
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