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Extremely Hard Science Quiz Even Einstein would scratch his head!
How many electrons does carbon have in its outer shell?
Which of these is defined as a chemical substance that consists of just one type of atom?
Protons and neutrons have approximately the same what?
Encleadus is a moon of which planet?
Rhea is a moon of which planet?
Ananke moons can be found orbiting which planet?
Which planet has the second largest moon in the Solar System?
What is the daily recommended (kilo) calorie intake for an adult female?
Iapetus is a moon of which planet?
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