Description: 물질은 공간을 차지하고 질량을 가진 모든 것을 말합니다. 우리가 가장 익숙하게 알고 있는 물질의 상태는 고체, 액체, 기체, 그리고 플라즈마입니다. 물질은 가열하거나 냉각하면 한 상태에서 다른 상태로 변할 수 있습니다. 또한 물질의 양은 질량 단위, 예를 들어 킬로그램(kg)으로 측정합니다.

Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

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