Answer:
2. The material dissolves
Explanation:
The Question tests the understanding of chemical change and whether we know the signs that show its occurrence.
First we need to know what is chemical change;
- Chemical change is a type of change that involves formation of a new substance different from the original substance.
Second we need to identify the signs that indicate the occurrence of a chemical change
- Chemical change in chemical reactions is characterized by various signs which include;
- Production of bubbles
- Color change
- Formation of a precipitate
- Change of odor
- Change in temperature.
- Therefore, in this case, the material dissolving is not a sign that chemical change has taken place.
