Explanation:
A physical change does not alter the chemical nature of the substance involved.
Examples include changes to the shape, size, phase, mass, or density of an object.
Conversely, a chemical change results in a modification to the chemical composition of the material.
For instance, when yeast granules are added to hydrogen peroxide, the appearance of fizzing and bubbling indicates a chemical reaction producing gas.
Additionally, heat is released causing the temperature to rise.
Therefore, based on these observations, it is clear that a chemical change has occurred.
