Substances

These substances are not poisonous in themselves.

The mixture of these substances is dangerous.

I would like to know how these substances are absorbed by the body.

The process by which substances are turned directly from a solid state into a gas is called sublimation.

I think that, as he's using addictive substances like thinner, the chance of rehabilitation is low.

Prostitution, gambling, the use of narcotic substances, drunkenness, disorder, and all other illegal activities are STRICTLY FORBIDDEN.

There's a chance that tap water may contain harmful substances like chlorine and lead.

Water and mineral salts are inorganic substances.

We will not need to add artificial substances to our food.

It's dangerous to mix these substances.