chemical

• 与化学有关的，或指由化学过程产生或涉及化学反应的物质。

Relating to chemistry or the interactions of substances as studied in chemistry.

1. Relating to chemistryB1formal

   Of or relating to the scientific study of substances and their reactions.

   化学的

   • The chemical reaction produced a bright blue flame.
   • She studied chemical engineering at university.
   • Chemical compounds can be very dangerous if mishandled.

2. Produced by or used in chemistryB1formal

   Involving or resulting from a process of chemical change.

   化学的

   • The factory uses chemical processes to create plastic.
   • Chemical fertilizers are widely used in modern agriculture.
   • The chemical composition of the water was tested.

   同义词chemic

• 指具有特定分子组成的物质，常用于科学、工业或日常语境；也可指化学制品或化学物质。

A noun referring to a substance with a distinct molecular composition, often used in scientific, industrial, or household contexts.

1. B1formalscientific

   A substance with a distinct molecular composition that is produced by or used in a chemical process.

   化学物质

   • The lab stores various chemicals in sealed containers.
   • This chemical reacts violently with water.
   • They tested the chemical for purity before using it in the experiment.

   同义词agentcompoundmaterialreagentsubstance

2. AdditiveB1formalscientific

   A substance used in manufacturing or agriculture to achieve a specific effect.

   化学添加剂

   • Farmers use chemicals to protect crops from pests.
   • Many processed foods contain artificial chemicals.
   • The factory released harmful chemicals into the river.

   同义词additiveagentcompoundsubstancetreatment

   反义词organic