Description: 物質是指占據空間並具有質量的任何事物。最常見的物質狀態是固體、液體、氣體和等離子體。物質加熱或冷卻後，其狀態會從一種形式轉變為另一種形式。物質的數​​量以質量單位來衡量，例如千克 (kg)。

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

This is an automated transliteration of the simplified Chinese translation of this term

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