The plant's composition changes as new substances are formed.
Here's why:
* Chemical change involves the formation of new substances with different properties. During decay, microorganisms break down the complex molecules in the plant (like cellulose and sugars) into simpler molecules (like carbon dioxide, water, and methane). This is a change in the plant's chemical makeup.
* Physical changes only alter the appearance or state of matter, not its chemical composition. Decaying involves a breakdown of the plant's structure, not just a change in its form.
In summary, the decaying plant undergoes a chemical change because its original molecules are broken down and rearranged into new, different substances.
