Although I broke test tubes and played about with chemicals for fun, I did occasionally manage to obey the teacher's instructions as well; repeating experiments that others had long ago undertaken.
Organic cultivation is a method of growing plants (grains, vegetables, fruit, etc.) without using agricultural chemicals.
We must stop using ozone-depleting chemicals immediately.
It contained harmful chemicals.
This plastic garbage bag is free of hazardous chemicals.
Ayako's skin is sensitive to chemicals.
No consideration is paid to people who are sensitive to chemicals.