Page 8 - COMPOSITION AND PROPERTIES OF AIR
P. 8
4. OTHER GASES:
•Air also contains other gases such
as argon, neon, hydrogen and
helium.
•Argon is used in making light bulbs
and fluorescent tubes.
5. Water Vapour:
• Air contains water vapour which
helps maintain the water cycle.
Water vapour is formed due to the
evaporation of water from
different water bodies such as
rivers, lakes and seas. When air
comes in contact with cold
surfaces, it is these vapours that
turn into or condense into droplets
of water.