This mineral is very rare.

My favorite bowl dish is Oyakodon.

His art style is unique, it's neither fish nor fowl.

When he had a problem due to his own actions, he remembered the phrase 'chickens come home to roost'.

We should always remember the power of Kannon in difficult times.

Sandwich compounds are being studied in a branch of chemistry.

He always buys cheap things, so in the end, it becomes 'penny wise and pound foolish'.

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.