In the Introduction, we talked about separating the useful 0.7% of Uranium from the 99.3% of the useless Uranium. These two Uranium's are different due to their masses. The useful Uranium is about 1.3% lighter than the useless Uranium. It is this difference in the physical property that is used to separate the two Uranium's.
This process is extremely complicated and expensive as the mass difference is so tiny. In fact, this is the reason most countries don't have nuclear power/weapons. We hope this module has helped you understand the separation of mixtures, and the conceptual basis for separation. As enlightened citizens of the world, let us also hope that different nations use nuclear power for good, and not destructive, purposes.
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Check out the next module in this series! Atoms and Molecules 1