化学（かがく、kagaku）
- chemistry

The Japanese word 化学 化学, read as かがく (kagaku), means "chemistry." It's the scientific study of the properties and behavior of matter. This includes the composition, structure, properties, and reactions of matter, as well as the energy changes involved. The term covers a broad range of topics, from the basic building blocks of matter (atoms and molecules) to complex chemical systems. The word 化学 is the study of matter and its changes. ⚫︎ It includes the study of elements, compounds, and mixtures. ⚫︎ It deals with topics like chemical reactions, chemical bonds, and the properties of different substances. ⚫︎ It's a fundamental science with applications in many fields, including medicine, materials science, and environmental science.

⚫︎ 化学の実験 Translation: Chemistry experiment ⚫︎ 化学の先生 Translation: Chemistry teacher ⚫︎ 化学反応 Translation: Chemical reaction

You use 化学 化学 when talking about the science of chemistry, or things related to chemistry, similar to how you would use "chemistry" in English. ⚫︎ When discussing a class on the subject. ⚫︎ When referencing a specific chemical substance or process. ⚫︎ When describing the field of study.

化学 化学 is primarily written in kanji. The reading is かがく in hiragana. There are no other common ways to write this word. The okurigana is standard.

There are no direct perfect synonyms in Japanese, but related terms include: ⚫︎ 科学 (かがく - kagaku) which broadly means "science" and includes 化学. ⚫︎ 元素 (げんそ - genso) which means "element" and is a core part of chemistry.

There aren't direct antonyms, as 化学 describes a field of study. However, disciplines that study other areas might be considered contrasting subjects. ⚫︎ For example, 生物学 (せいぶつがく - seibutsugaku) meaning "biology" studies life.

田中さんは大学で化学を専攻しています。 ・Translation: Mr. Tanaka majors in chemistry at university. ・Explanation: This sentence indicates that Tanaka's field of study is 化学.

この物質は化学的に安定しています。 ・Translation: This substance is chemically stable. ・Explanation: This describes the property of a substance in terms of its behavior in 化学.

The word 化学 is a compound of two kanji: 化 (ka), meaning "to change" or "transformation", and 学 (gaku), meaning "study" or "science." The combination reflects the core focus of chemistry: the study of how substances change and transform. It was adopted into Japanese during the Meiji period, reflecting the introduction of Western scientific concepts.