This chemical reaction is very dangerous.

He is dedicated to the study of immunochemistry.

Thermochemistry is a part of chemistry that deals with the reactions of heat and matter.

Chemical pollution has a serious impact on the health of the Earth.

This shirt is made of chemical fiber.

The use of weapons of mass destruction is prohibited by international law.

This is my unused camera.

This product is subject to a prohibition of sale.

The government issued a curfew to prevent the spread of the new coronavirus.

He is good at solving trigonometry problems.