化学 + 物质
The noun 物质 (wùzhì) means 'substance,' 'matter,' or 'material.' It refers to any physical material or the tangible aspects of reality. It is used in scientific contexts such as 化学物质 (chemical substance) and in philosophical discussions contrasting 物质 (material) with 精神 (spiritual).
水是一种常见的物质。
Shuǐ shì yì zhǒng chángjiàn de wùzhì.
Water is a common substance.
这种化学物质对人体有害。
Zhè zhǒng huàxué wùzhì duì réntǐ yǒuhài.
This chemical substance is harmful to the human body.
科学家发现了一种新的物质。
Kēxuéjiā fāxiàn le yì zhǒng xīn de wùzhì.
Scientists discovered a new substance.