Question

plz help fast. Which of the following represents a chemical change? (2 points)

1. decomposition of stone due to acid rain

2. iron's attraction to a magnet

3. the pink color of a rose

4. rocks being smoothed by rapid water movement

Answer 1

Answer:

1. Decomposition of stone due to acid rain.

3. The pink color of a rose.

Explanation:

Chemical changes always end up with new products in an equation, or it has always something to do with chemicals. Physical changes on the other hand, do not result in new products and it just changes the physical properties and physical state of matter of the object.