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Extremely Hard Science Quiz Even Einstein would scratch his head!
What is the most abundant pure element in the Earth's atmosphere?
The sea creature named 'Slippery Dick' is a what?
The pearl is the birthstone for which star sign?
About how many stars are in the Milky Way?
Dogs' unique relationship with humans mean they are referred to as man's best what?
What is the pH value of washing soda?
What must an element readily gain or lose in order to be classed as 'reactive'?
Protons and neutrons have approximately the same what?
Which number group in the Periodic Table contains oxygen?
A molecule that can act as an acid or a base is described as what?
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