Question

What is chemistry?
A. Study of substances
B. Investigations of reactions and properties
C. Study of reactions to form new substances
D. All of the above

Answer 1

Hint: Chemistry is the scientific discipline involved with elements and compounds composed of atoms, molecules and ions. It also deals with their composition, structure, property, behavior, and changes they undergo during a reaction with other substances. Chemistry occupies an intermediate position between physics and biology. It is sometimes called the central science because it provides a foundation for understanding both basic and applied scientific discipline.

Complete step by step answer:
Chemistry is the science that deals with the properties, composition, and structure of substances, the transformation they undergo and the energy that is released or absorbed during these processes.
Chemistry addresses the topics such as how atoms and molecules interact via chemical bonds to form new chemical compounds. There are four types of chemical bond, they are covalent bond, ionic bond, hydrogen bond and Van der waals forces.
Every substance whether naturally occurring or artificially produced, consists of one or more of the hundred-odd species of atoms that has been identified as an element.
Although these atoms in turns are composed of more elementary particles, they are the basic building blocks of the chemical substances.
Chemistry, therefore, is concerned not with the subatomic domain but with the property of atoms.
Chemistry is also concerned with the utilization of natural substances and creation of artificial ones.
So, we can say that chemistry involves the study of substances, investigation of reactions and properties and the study of reactions to form substances.

So, the correct answer is “Option D”.

Note:
Chemistry explains aspects of plant chemistry, the study of igneous rocks, how atmospheric ozone is formed and how environmental pollution are degraded, the property of soil on moon, how medicines work and how to collect DNA evidence at a crime scene.