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 study of organic compounds is an important field in chemistry.

My child attends a supplementary school every Saturday.

High fructose corn syrup is included in many processed foods.

In organic chemistry, cis-trans isomerism is an important concept.

He understands the meaning of the proverb 'Teaching is half learning', which means that teaching leads to one's own learning.

Euclidean geometry forms the foundation of geometry.

He is interested in geometrical shapes.