Mustard gas is a type of chemical weapon and is very dangerous.

Methane gas is one of the causes of global warming.

I renovated the kitchen to install a new gas stove.

We will use rare gases in this experiment.

The gas pump is broken, so I can't put gas in the car.

The gas pipe is broken and gas is leaking.

Poison gas is leaking from that factory.

I used a gas burner in a chemistry experiment.

I don't really like carbonated drinks.

This mineral contains carbonate.