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Extremely Hard Science Quiz Even Einstein would scratch his head!
Sonar is an acronym for sound navigation and what?
Encleadus is a moon of which planet?
When atoms join together what do they form?
Ananke moons can be found orbiting which planet?
Which of these have a positive charge?
What is Hg the chemical symbol for?
Protons and neutrons have approximately the same what?
Aoede and Iocaste are moons of which planet?
Who discovered the electron in 1887?
Which two elements combine to make ammonia?
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