This inorganic compound plays an important role in chemical reactions.

Sandwich compounds are being studied in a branch of chemistry.

In this chemistry experiment, we will learn about the dangers of cyanide compounds.

This compound was made by the chemical combination of two different elements.

These two elements chemically combine to create a new substance.

He was holding my hand tightly.

He was running while holding a bag.

He always carries an umbrella around.

He is majoring in chemistry at university.

Understanding the structure of atoms is a fundamental part of physics.