This inorganic compound plays an important role in chemical reactions.

Sandwich compounds are being studied in a branch of chemistry.

Acidic oxides react with water to produce acids.

Aluminum is an amphoteric oxide, it reacts with both acids and bases.

Peroxides play an important role in chemical reactions.

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

I will participate in an obstacle race this weekend.

In this situation, the proverb 'it is best to submit to circumstances' applies.

He's always shouting loudly, but in reality, he's just a barking dog that seldom bites.

The image on my new high-definition TV is very clear.