In search of more solutions: Which gas is which?

Description

In the beaker are test-tubes containing different gases - carbon dioxide, dinitrogen oxide, oxygen, chlorine and hydrogen. You may remove a test-tube only once and when you do so you must identify the gas immediately.

which-gas-is-which

This resource is part of a book called In Search of more Solutions. You can buy a copy via the Royal Society of Chemistry online shop for £19.95.