Final answer:
The correct answer is option The science of substances changing into different substances.
Step-by-step explanation:
The best description of chemistry among the given options is that it is the science of substances changing into different substances. Chemistry is a branch of science focused on the study of matter, its properties, the changes it undergoes, and the energy that accompanies these processes.
Matter is defined as anything that has mass and takes up space. In chemistry, when a substance undergoes a change into one or more different substances, this is known as a chemical change. The discipline encompasses various specialties, including physical chemistry, organic chemistry, inorganic chemistry, analytical chemistry, and biochemistry, that contribute to our understanding of the material world.