elements

The flashcards below were created by user camandstu on FreezingBlue Flashcards.

What number in the periodic table is hydrogen?

1
Which percentage of the universe is made of hydrogen?

75%
What colour is hydrogen?

colourless
What is hydrogen important for?

life
If we didn't have hydrogen, what wouldn't exist on earth?

water
Who discovered hydrogen?

Paracelsus
Who first discovered that hydrogen was an element?

Henry Cavendish
What does "hydrogen" mean?

water-maker
What does "hydro" mean?

water
Is hydrogen heavy or light?

light
How did Henry Cavendish find hydrogen?

He put metal bars into acid and the gas came off.
Is hydrogen common on earth?

nope
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?

dirigibles
What were hydrogen airships called in Germany?

zeppelins
Why don't we have hydrogen airships nowadays?

They're highly flammable.
Who uses hydrogen to fuel rockets?

NASA

(National Aeronautics and Space Administration)
In the future what might hydrogen replace in cars?

petrol
What is number 1 in the periodic table?

hydrogen
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?

heavy
What is the atomic number of xenon?

54