Which of the following statements holds true for a chemical change? in a chemical change, no new substance is formed. in a chemical change, a substance changes its phase. in a chemical change, the molecular structure of a substance changes. in a chemical change, one substance dissolves into another. nextreset

In a chemical change, the molecular structure of the substance changes.

Explanation:

Chemical change is the change in which chemical composition of the substance changes by rearrangement of atoms. The molecular structure changes due to change in atoms.

Example:

Physical change is a change in which only the physical properties such as size, shape etc change and there is no rearrangement of atoms.

Example: melting of ice

the leaf is an organ of a typical plant, and the main functions are to complete photosynthesis and allow the plant to exchange gas, just like how we have the respiratory system. leaves have the stomata, which collects maintains co2 and o2 levels. this is necessary for cell metabolism. the leaf also collects sunlight using chloroplasts. succinctly, leaves own a pivotal role in sustaining plant life.