Card Set Information
Questions on elements
What number in the periodic table is hydrogen?
Which percentage of the universe is made of hydrogen?
What colour is hydrogen?
What is hydrogen important for?
If we didn't have hydrogen, what wouldn't exist on earth?
Who discovered hydrogen?
Who first discovered that hydrogen was an element?
What does "hydrogen" mean?
What does "hydro" mean?
Is hydrogen heavy or light?
How did Henry Cavendish find hydrogen?
He put metal bars into acid and the gas came off.
Is hydrogen common on earth?
What are the prime components of air?
Nitrogen and Oxygen
What can hydrogen be used for?
party balloons, hot air balloons etc.
What were hydrogen airships called in Britain?
What were hydrogen airships called in Germany?
Why don't we have hydrogen airships nowadays?
They're highly flammable.
Who uses hydrogen to fuel rockets?
(National Aeronautics and Space Administration)
In the future what might hydrogen replace in cars?
What is number 1 in the periodic table?
Why might it be dangerous to put hydrogen in cars?
Because it's flammable.
Where is xenon found?
Xenon is found from liquid air.
Who discovered Xenon?
Sir William Ramsey and M.W travers
What does Xenon mean
It comes fro "xenos" meaning stranger.
When was xenon discovered?
July 12th 1898
Is xenon heavy or light?
What is the atomic number of xenon?