His team won the game by default because the opponent didn't show up.

There was discord between them.

That painting is incongruous with the room's decoration.

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

Lithium aluminium hydride is necessary for this chemical reaction.

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.

I will participate in an obstacle race this weekend.