The Periodic Table

Question 1

Describe the use of noble gas like argon

Answer 1

Used in light bulbs. The very thin metal filament inside the bulb would react with oxygen and burn away if the bulb were filled with air instead of argon

Question 2

Describe the use of noble gas like helium

Answer 2

Used in balloons and airships. It is much less dense than air, so balloons filled with it float upwards.