Which of the following represents a chemical change? rocks being smoothed by rapid water movement the pink color of a rose iron's attraction to a magnet decomposition of stone due to acid rain

Decomposition of stone due to acid rain

Explanation:

Chemical changes are changes where new substances form due to changes in the properties of starting substances - reagents. Matters are constantly changing. When changes are only related to their state, or even to the aggregation of material, we call it the physical transformation of matter. Transformation can only be called chemistry when it results in the production of a material distinct from the initial one, with also distinct characteristics. According to this concept, we can conclude that an example of chemical change is stone decomposition due to acid rain, since acid rain is a reagent that alters the common state of the stone, causing it to decompose.

it takes about 30 days for it to break down

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.