This substance undergoes a chemical change when heat is applied.

In this experiment, you can observe a chemical reaction.

I found an old box in the storeroom.

Her character, with its dignified and resolute nature, is charming.

He is interested in astronomy, especially in studying Draco.

His efforts finally brought about a spectacular result.

My precious treasure is in this box.

He owns a lot of things, so his room is always messy.

My jeans have joined the pile of things to be mended.

This waste product needs to be properly disposed of.