chemistry
The German word for chemistry is 'Chemie'. It is used in the same way as in English, referring to the scientific discipline involved with elements and compounds composed of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during a reaction with other substances.
I am studying chemistry at the university.
This sentence expresses a student's action of studying chemistry as a major or a course at the university. In German, it is common to put the object 'Chemie' after the verb 'studiere'.
Chemistry is a fascinating science.
This sentence shows an opinion about chemistry being a fascinating field of science. It is a simple subject-verb-object construction that can be used to express opinions about other fields of study or interests too.
Without chemistry, there is no life.
This sentence uses an existential construction to express the significance of chemistry to life. It uses 'gibt es' and 'ohne' to form the concept of necessity or existence. This construction can be used to express the importance of different things in life or in various contexts.