
Concept explainers
Interpretation:
The conditions which show chemical change are to be observed.
Concept introduction:
A chemical change is one which changes the substance after the change.

Answer to Problem 8STP
The observations for a chemical change are:
- Change in color
- Change in temperature
- Formation of some gas
- Precipitation of some substance
Explanation of Solution
To check whether a substance has undergone a chemical change, one must check what type of changes has occurred. If something new is obtained then there is chemical change.
Chemical change changes the substance into new substance. Thus formation of new substance reveals that chemical change has occurred.
Chapter 13 Solutions
Glencoe Chemistry: Matter and Change, Student Edition
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