Properties of gases
exercises
Hydrogen gas was used in the
early 1900s to lift giant dirigibles (air ships). Its use was later banned.
a) What property of hydrogen gas made it useful for use in dirigibles?
b) What property of hydrogen contributed to its decline in the air transport
industry?
Click to see a 120kb movie of
hydrogen gas and a naked flame.
Click
to see a 120kb movie of carbon dioxide gas been poured into a beaker with
a lit candle.
What two properties of carbon dioxide can you immediately identify?
Describe what visible changes occur to lime water when carbon dioxide
gas is bubbled through it? Click
to see a 400kb movie of this.
Oxygen is said to sustain life. What property of oxygen gas is obvious when a glowing splint is brought into contact with it? Click to see 120kb movie of this.
Unlike solids and liquids, the volume of a gas is greatly altered with slight changes in temperature.
What property of a gas changes
inside the hot air balloon in order to create lift?
Why is it necessary to launch a hot air balloon during a cold morning?
Describe what is happening
to the air molecules as heat is applied to inflate the balloon.
Look at the animation below.
