The soul is a Breath of GOD.
God breath His life energy into Adam to make Adam a living being, which is a soul as we call it.
Genesis 2.7
7.Then the Lord GOD formed man from the dust of the ground, and breathed into his nostrils the Breath of Life (Genesis 2.7) (Ezekiel 37.4-10) (Revelation 11.11), and the man became a living being.
Because soul is a spiritual entity, it does not sleep and does not dies, it does not need food or water, but exist as long as GOD Himself exist, because it is a portion of GOD'S life energy.
Our soul (spirit) is not a physical matter but purely spiritual matter and our physical environment and physical laws have no effect on it.
Physical body at the end of its life time returns to the ground (dust - physical, chemical, and biological components of the Earth) from which it was made, but the soul returns to One Who gave it, to GOD.
Genesis 3.19
19.”By the sweat of your face you shall eat bread until you return to the ground, out of it you were taken, you are dust, and to dust you shall return." (Genesis 3.19) (Job 4.19) (Psalm 103.14) (Ecclesiast 3.20, 12.7)
Concerning Hades or Paradise, it is up to GOD to judge to which place a soul of a human will go.
Actually soul can be destroy, and it would be a final death from which is no return, in Bible such state called as a Second Death.
Revelation 20.14-15
14.Then Death and Hades were thrown into the lake of fire (Isaiah 25.8),
15.and anyone whose name was not found written in the Book of Life was thrown into the lake of fire.
Revelation 21.8
8."But as for the cowardly, the faithless, the polluted, the murderers, the fornicators, the sorcerers, the idolaters, and all liars, their place will be in the lake that burns with fire and sulfur, which is the Second Death."